826 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			LLVM
		
	
	
	
			
		
		
	
	
			826 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			LLVM
		
	
	
	
| ; RUN: opt -objc-arc -S < %s | FileCheck %s
 | |
| 
 | |
| %struct.__objcFastEnumerationState = type { i64, i8**, i64*, [5 x i64] }
 | |
| 
 | |
| @"\01L_OBJC_METH_VAR_NAME_" = internal global [43 x i8] c"countByEnumeratingWithState:objects:count:\00", section "__TEXT,__objc_methname,cstring_literals", align 1
 | |
| @"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([43 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i64 0, i64 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
 | |
| @g = common global i8* null, align 8
 | |
| @"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip"
 | |
| 
 | |
| declare void @callee()
 | |
| declare i8* @returner()
 | |
| declare i8* @objc_retainAutoreleasedReturnValue(i8*)
 | |
| declare i8* @objc_retain(i8*)
 | |
| declare void @objc_enumerationMutation(i8*)
 | |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
 | |
| declare i8* @objc_msgSend(i8*, i8*, ...) nonlazybind
 | |
| declare void @use(i8*)
 | |
| declare void @objc_release(i8*)
 | |
| declare i8* @def()
 | |
| declare void @__crasher_block_invoke(i8* nocapture)
 | |
| declare i8* @objc_retainBlock(i8*)
 | |
| declare void @__crasher_block_invoke1(i8* nocapture)
 | |
| 
 | |
| !0 = metadata !{}
 | |
| 
 | |
| ; Delete a nested retain+release pair.
 | |
| 
 | |
| ; CHECK: define void @test0(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK-NOT: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test0(i8* %a) nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %0 = call i8* @objc_retain(i8* %a) nounwind
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %1 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
 | |
|   br label %forcoll.loopbody.outer
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| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call, %forcoll.loopinit ], [ %call6, %forcoll.refetch ]
 | |
|   %tmp7 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp7, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ]
 | |
|   %mutationsptr3 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr3, align 8
 | |
|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %stateitems = load i8*** %stateitems.ptr, align 8
 | |
|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
 | |
|   %3 = load i8** %currentitem.ptr, align 8
 | |
|   call void @use(i8* %3)
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|   %4 = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %4, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp5 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call6 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp5, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %5 = icmp eq i64 %call6, 0
 | |
|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %1) nounwind
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
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|   ret void
 | |
| }
 | |
| 
 | |
| ; Delete a nested retain+release pair.
 | |
| 
 | |
| ; CHECK: define void @test2(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK-NOT: @objc_retain
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| ; CHECK: }
 | |
| define void @test2() nounwind {
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| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
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|   %call = call i8* @returner()
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|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
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|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %1 = call i8* @objc_retain(i8* %0) nounwind
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|   %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
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|   %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call3, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
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| 
 | |
| forcoll.loopinit:
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|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
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|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
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|   br label %forcoll.loopbody.outer
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| 
 | |
| forcoll.loopbody.outer:
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|   %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
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|   %tmp8 = icmp ugt i64 %forcoll.count.ph, 1
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|   %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1
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|   br label %forcoll.loopbody
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| 
 | |
| forcoll.loopbody:
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|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ]
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|   %mutationsptr4 = load i64** %mutationsptr.ptr, align 8
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|   %statemutations = load i64* %mutationsptr4, align 8
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|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
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|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
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| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
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|   br label %forcoll.notmutated
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| 
 | |
| forcoll.notmutated:
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|   %stateitems = load i8*** %stateitems.ptr, align 8
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|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
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|   %3 = load i8** %currentitem.ptr, align 8
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|   call void @use(i8* %3)
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|   %4 = add i64 %forcoll.index, 1
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|   %exitcond = icmp eq i64 %4, %umax
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|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
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| 
 | |
| forcoll.refetch:
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|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
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|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
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|   %5 = icmp eq i64 %call7, 0
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|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
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| 
 | |
| forcoll.empty:
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|   call void @objc_release(i8* %1) nounwind
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|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
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|   ret void
 | |
| }
 | |
| 
 | |
| ; Delete a nested retain+release pair.
 | |
| 
 | |
| ; CHECK: define void @test4(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK-NOT: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test4() nounwind {
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| entry:
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|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
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|   %items.ptr = alloca [16 x i8*], align 8
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|   %tmp = load i8** @g, align 8
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|   %0 = call i8* @objc_retain(i8* %tmp) nounwind
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|   %tmp2 = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
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|   call void @llvm.memset.p0i8.i64(i8* %tmp2, i8 0, i64 64, i32 8, i1 false)
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|   %1 = call i8* @objc_retain(i8* %0) nounwind
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|   %tmp4 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
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|   %call = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp4, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call, 0
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|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
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| 
 | |
| forcoll.loopinit:
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|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
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|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
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|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
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|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
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|   br label %forcoll.loopbody.outer
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| 
 | |
| forcoll.loopbody.outer:
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|   %forcoll.count.ph = phi i64 [ %call, %forcoll.loopinit ], [ %call8, %forcoll.refetch ]
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|   %tmp9 = icmp ugt i64 %forcoll.count.ph, 1
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|   %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1
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|   br label %forcoll.loopbody
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| 
 | |
| forcoll.loopbody:
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|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ]
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|   %mutationsptr5 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr5, align 8
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|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
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|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %stateitems = load i8*** %stateitems.ptr, align 8
 | |
|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
 | |
|   %3 = load i8** %currentitem.ptr, align 8
 | |
|   call void @use(i8* %3)
 | |
|   %4 = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %4, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp7 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call8 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp7, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %5 = icmp eq i64 %call8, 0
 | |
|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %1) nounwind
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; Delete a nested retain+release pair.
 | |
| 
 | |
| ; CHECK: define void @test5(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK-NOT: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test5() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   call void @callee()
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %1 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call3, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp8 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ]
 | |
|   %mutationsptr4 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr4, align 8
 | |
|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %stateitems = load i8*** %stateitems.ptr, align 8
 | |
|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
 | |
|   %3 = load i8** %currentitem.ptr, align 8
 | |
|   call void @use(i8* %3)
 | |
|   %4 = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %4, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %5 = icmp eq i64 %call7, 0
 | |
|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %1) nounwind
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; TODO: Delete a nested retain+release pair.
 | |
| ; The optimizer currently can't do this, because isn't isn't sophisticated enough in
 | |
| ; reasnoning about nesting.
 | |
| 
 | |
| ; CHECK: define void @test6(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test6() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %1 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call3, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp8 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ]
 | |
|   %mutationsptr4 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr4, align 8
 | |
|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %stateitems = load i8*** %stateitems.ptr, align 8
 | |
|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
 | |
|   %3 = load i8** %currentitem.ptr, align 8
 | |
|   call void @use(i8* %3)
 | |
|   %4 = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %4, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %5 = icmp eq i64 %call7, 0
 | |
|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %1) nounwind
 | |
|   call void @callee()
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; TODO: Delete a nested retain+release pair.
 | |
| ; The optimizer currently can't do this, because isn't isn't sophisticated enough in
 | |
| ; reasnoning about nesting.
 | |
| 
 | |
| ; CHECK: define void @test7(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test7() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   call void @callee()
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %1 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call3, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp8 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.notmutated ]
 | |
|   %mutationsptr4 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr4, align 8
 | |
|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %stateitems = load i8*** %stateitems.ptr, align 8
 | |
|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
 | |
|   %3 = load i8** %currentitem.ptr, align 8
 | |
|   call void @use(i8* %3)
 | |
|   %4 = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %4, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %5 = icmp eq i64 %call7, 0
 | |
|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %1) nounwind
 | |
|   call void @callee()
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; Delete a nested retain+release pair.
 | |
| 
 | |
| ; CHECK: define void @test8(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK-NOT: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test8() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %1 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp2 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call3 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp2, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call3, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   %stateitems.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 1
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call3, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp8 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp8, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ 0, %forcoll.loopbody.outer ], [ %4, %forcoll.next ]
 | |
|   %mutationsptr4 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr4, align 8
 | |
|   %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %1)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %stateitems = load i8*** %stateitems.ptr, align 8
 | |
|   %currentitem.ptr = getelementptr i8** %stateitems, i64 %forcoll.index
 | |
|   %3 = load i8** %currentitem.ptr, align 8
 | |
|   %tobool = icmp eq i8* %3, null
 | |
|   br i1 %tobool, label %forcoll.next, label %if.then
 | |
| 
 | |
| if.then:
 | |
|   call void @callee()
 | |
|   br label %forcoll.next
 | |
| 
 | |
| forcoll.next:
 | |
|   %4 = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %4, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %1, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %5 = icmp eq i64 %call7, 0
 | |
|   br i1 %5, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %1) nounwind
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; TODO: Delete a nested retain+release pair.
 | |
| ; The optimizer currently can't do this, because of a split loop backedge.
 | |
| ; See test9b for the same testcase without a split backedge.
 | |
| 
 | |
| ; CHECK: define void @test9(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test9() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   %call1 = call i8* @returner()
 | |
|   %1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call1) nounwind
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %2 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call4 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp3, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call4, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call4, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp9 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ %phitmp, %forcoll.notmutated.forcoll.loopbody_crit_edge ], [ 1, %forcoll.loopbody.outer ]
 | |
|   %mutationsptr5 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr5, align 8
 | |
|   %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %3, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %2)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %exitcond = icmp eq i64 %forcoll.index, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.notmutated.forcoll.loopbody_crit_edge
 | |
| 
 | |
| forcoll.notmutated.forcoll.loopbody_crit_edge:
 | |
|   %phitmp = add i64 %forcoll.index, 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %4 = icmp eq i64 %call7, 0
 | |
|   br i1 %4, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %2) nounwind
 | |
|   call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; Like test9, but without a split backedge. TODO: optimize this.
 | |
| 
 | |
| ; CHECK: define void @test9b(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test9b() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   %call1 = call i8* @returner()
 | |
|   %1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call1) nounwind
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %2 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call4 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp3, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call4, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call4, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp9 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ %phitmp, %forcoll.notmutated ], [ 0, %forcoll.loopbody.outer ]
 | |
|   %mutationsptr5 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr5, align 8
 | |
|   %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %3, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %2)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %phitmp = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %phitmp, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %4 = icmp eq i64 %call7, 0
 | |
|   br i1 %4, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %2) nounwind
 | |
|   call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; TODO: Delete a nested retain+release pair.
 | |
| ; The optimizer currently can't do this, because of a split loop backedge.
 | |
| ; See test10b for the same testcase without a split backedge.
 | |
| 
 | |
| ; CHECK: define void @test10(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test10() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   %call1 = call i8* @returner()
 | |
|   %1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call1) nounwind
 | |
|   call void @callee()
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %2 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call4 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp3, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call4, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call4, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp9 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ %phitmp, %forcoll.notmutated.forcoll.loopbody_crit_edge ], [ 1, %forcoll.loopbody.outer ]
 | |
|   %mutationsptr5 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr5, align 8
 | |
|   %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %3, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %2)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %exitcond = icmp eq i64 %forcoll.index, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.notmutated.forcoll.loopbody_crit_edge
 | |
| 
 | |
| forcoll.notmutated.forcoll.loopbody_crit_edge:
 | |
|   %phitmp = add i64 %forcoll.index, 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %4 = icmp eq i64 %call7, 0
 | |
|   br i1 %4, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %2) nounwind
 | |
|   call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; Like test10, but without a split backedge. TODO: optimize this.
 | |
| 
 | |
| ; CHECK: define void @test10b(
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: call i8* @objc_retain
 | |
| ; CHECK: @objc_retain
 | |
| ; CHECK: }
 | |
| define void @test10b() nounwind {
 | |
| entry:
 | |
|   %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
 | |
|   %items.ptr = alloca [16 x i8*], align 8
 | |
|   %call = call i8* @returner()
 | |
|   %0 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
 | |
|   %call1 = call i8* @returner()
 | |
|   %1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call1) nounwind
 | |
|   call void @callee()
 | |
|   %tmp = bitcast %struct.__objcFastEnumerationState* %state.ptr to i8*
 | |
|   call void @llvm.memset.p0i8.i64(i8* %tmp, i8 0, i64 64, i32 8, i1 false)
 | |
|   %2 = call i8* @objc_retain(i8* %0) nounwind
 | |
|   %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call4 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp3, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %iszero = icmp eq i64 %call4, 0
 | |
|   br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
 | |
| 
 | |
| forcoll.loopinit:
 | |
|   %mutationsptr.ptr = getelementptr inbounds %struct.__objcFastEnumerationState* %state.ptr, i64 0, i32 2
 | |
|   %mutationsptr = load i64** %mutationsptr.ptr, align 8
 | |
|   %forcoll.initial-mutations = load i64* %mutationsptr, align 8
 | |
|   br label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.loopbody.outer:
 | |
|   %forcoll.count.ph = phi i64 [ %call4, %forcoll.loopinit ], [ %call7, %forcoll.refetch ]
 | |
|   %tmp9 = icmp ugt i64 %forcoll.count.ph, 1
 | |
|   %umax = select i1 %tmp9, i64 %forcoll.count.ph, i64 1
 | |
|   br label %forcoll.loopbody
 | |
| 
 | |
| forcoll.loopbody:
 | |
|   %forcoll.index = phi i64 [ %phitmp, %forcoll.notmutated ], [ 0, %forcoll.loopbody.outer ]
 | |
|   %mutationsptr5 = load i64** %mutationsptr.ptr, align 8
 | |
|   %statemutations = load i64* %mutationsptr5, align 8
 | |
|   %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations
 | |
|   br i1 %3, label %forcoll.notmutated, label %forcoll.mutated
 | |
| 
 | |
| forcoll.mutated:
 | |
|   call void @objc_enumerationMutation(i8* %2)
 | |
|   br label %forcoll.notmutated
 | |
| 
 | |
| forcoll.notmutated:
 | |
|   %phitmp = add i64 %forcoll.index, 1
 | |
|   %exitcond = icmp eq i64 %phitmp, %umax
 | |
|   br i1 %exitcond, label %forcoll.refetch, label %forcoll.loopbody
 | |
| 
 | |
| forcoll.refetch:
 | |
|   %tmp6 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
 | |
|   %call7 = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, %struct.__objcFastEnumerationState*, [16 x i8*]*, i64)*)(i8* %2, i8* %tmp6, %struct.__objcFastEnumerationState* %state.ptr, [16 x i8*]* %items.ptr, i64 16)
 | |
|   %4 = icmp eq i64 %call7, 0
 | |
|   br i1 %4, label %forcoll.empty, label %forcoll.loopbody.outer
 | |
| 
 | |
| forcoll.empty:
 | |
|   call void @objc_release(i8* %2) nounwind
 | |
|   call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
 | |
|   call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; Pointers to strong pointers can obscure provenance relationships. Be conservative
 | |
| ; in the face of escaping pointers. rdar://12150909.
 | |
| 
 | |
| %struct.__block_d = type { i64, i64 }
 | |
| 
 | |
| @_NSConcreteStackBlock = external global i8*
 | |
| @__block_d_tmp = external hidden constant { i64, i64, i8*, i8*, i8*, i8* }
 | |
| @__block_d_tmp5 = external hidden constant { i64, i64, i8*, i8*, i8*, i8* }
 | |
| 
 | |
| ; CHECK: define void @test11(
 | |
| ; CHECK: tail call i8* @objc_retain(i8* %call) [[NUW:#[0-9]+]]
 | |
| ; CHECK: tail call i8* @objc_retain(i8* %call) [[NUW]]
 | |
| ; CHECK: call void @objc_release(i8* %call) [[NUW]], !clang.imprecise_release !0
 | |
| ; CHECK: }
 | |
| define void @test11() {
 | |
| entry:
 | |
|   %block = alloca <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>, align 8
 | |
|   %block9 = alloca <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>, align 8
 | |
|   %call = call i8* @def(), !clang.arc.no_objc_arc_exceptions !0
 | |
|   %foo = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block, i64 0, i32 5
 | |
|   %block.isa = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block, i64 0, i32 0
 | |
|   store i8* bitcast (i8** @_NSConcreteStackBlock to i8*), i8** %block.isa, align 8
 | |
|   %block.flags = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block, i64 0, i32 1
 | |
|   store i32 1107296256, i32* %block.flags, align 8
 | |
|   %block.reserved = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block, i64 0, i32 2
 | |
|   store i32 0, i32* %block.reserved, align 4
 | |
|   %block.invoke = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block, i64 0, i32 3
 | |
|   store i8* bitcast (void (i8*)* @__crasher_block_invoke to i8*), i8** %block.invoke, align 8
 | |
|   %block.d = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block, i64 0, i32 4
 | |
|   store %struct.__block_d* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @__block_d_tmp to %struct.__block_d*), %struct.__block_d** %block.d, align 8
 | |
|   %foo2 = tail call i8* @objc_retain(i8* %call) nounwind
 | |
|   store i8* %foo2, i8** %foo, align 8
 | |
|   %foo4 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block to i8*
 | |
|   %foo5 = call i8* @objc_retainBlock(i8* %foo4) nounwind
 | |
|   call void @use(i8* %foo5), !clang.arc.no_objc_arc_exceptions !0
 | |
|   call void @objc_release(i8* %foo5) nounwind
 | |
|   %strongdestroy = load i8** %foo, align 8
 | |
|   call void @objc_release(i8* %strongdestroy) nounwind, !clang.imprecise_release !0
 | |
|   %foo10 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9, i64 0, i32 5
 | |
|   %block.isa11 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9, i64 0, i32 0
 | |
|   store i8* bitcast (i8** @_NSConcreteStackBlock to i8*), i8** %block.isa11, align 8
 | |
|   %block.flags12 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9, i64 0, i32 1
 | |
|   store i32 1107296256, i32* %block.flags12, align 8
 | |
|   %block.reserved13 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9, i64 0, i32 2
 | |
|   store i32 0, i32* %block.reserved13, align 4
 | |
|   %block.invoke14 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9, i64 0, i32 3
 | |
|   store i8* bitcast (void (i8*)* @__crasher_block_invoke1 to i8*), i8** %block.invoke14, align 8
 | |
|   %block.d15 = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9, i64 0, i32 4
 | |
|   store %struct.__block_d* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @__block_d_tmp5 to %struct.__block_d*), %struct.__block_d** %block.d15, align 8
 | |
|   %foo18 = call i8* @objc_retain(i8* %call) nounwind
 | |
|   store i8* %call, i8** %foo10, align 8
 | |
|   %foo20 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_d*, i8* }>* %block9 to i8*
 | |
|   %foo21 = call i8* @objc_retainBlock(i8* %foo20) nounwind
 | |
|   call void @use(i8* %foo21), !clang.arc.no_objc_arc_exceptions !0
 | |
|   call void @objc_release(i8* %foo21) nounwind
 | |
|   %strongdestroy25 = load i8** %foo10, align 8
 | |
|   call void @objc_release(i8* %strongdestroy25) nounwind, !clang.imprecise_release !0
 | |
|   call void @objc_release(i8* %call) nounwind, !clang.imprecise_release !0
 | |
|   ret void
 | |
| }
 | |
| 
 | |
| ; CHECK: attributes [[NUW]] = { nounwind }
 | |
| ; CHECK: attributes #1 = { nonlazybind }
 |