164 lines
5.7 KiB
LLVM
164 lines
5.7 KiB
LLVM
; RUN: llc < %s -mtriple=i686-linux -show-mc-encoding | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK32
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; RUN: llc < %s -mtriple=x86_64-linux -show-mc-encoding | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK64
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; RUN: llc < %s -mtriple=x86_64-win32 -show-mc-encoding | FileCheck %s --check-prefix=CHECK --check-prefix=WIN64
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declare void @foo()
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declare void @bar()
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define void @f(i32 %x, i32 %y) optsize {
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entry:
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%p = icmp eq i32 %x, %y
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br i1 %p, label %bb1, label %bb2
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bb1:
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tail call void @foo()
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ret void
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bb2:
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tail call void @bar()
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ret void
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; CHECK-LABEL: f:
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; CHECK: cmp
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; CHECK: jne bar
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; Check that the asm doesn't just look good, but uses the correct encoding.
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; CHECK: encoding: [0x75,A]
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; CHECK: jmp foo
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}
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define void @f_non_leaf(i32 %x, i32 %y) optsize {
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entry:
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; Force %ebx to be spilled on the stack, turning this into
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; not a "leaf" function for Win64.
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tail call void asm sideeffect "", "~{ebx}"()
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%p = icmp eq i32 %x, %y
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br i1 %p, label %bb1, label %bb2
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bb1:
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tail call void @foo()
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ret void
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bb2:
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tail call void @bar()
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ret void
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; CHECK-LABEL: f_non_leaf:
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; WIN64-NOT: je foo
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; WIN64-NOT: jne bar
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; WIN64: jne
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; WIN64: jmp foo
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; WIN64: jmp bar
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}
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declare x86_thiscallcc zeroext i1 @baz(i8*, i32)
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define x86_thiscallcc zeroext i1 @BlockPlacementTest(i8* %this, i32 %x) optsize {
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entry:
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%and = and i32 %x, 42
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%tobool = icmp eq i32 %and, 0
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br i1 %tobool, label %land.end, label %land.rhs
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land.rhs:
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%and6 = and i32 %x, 44
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%tobool7 = icmp eq i32 %and6, 0
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br i1 %tobool7, label %lor.rhs, label %land.end
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lor.rhs:
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%call = tail call x86_thiscallcc zeroext i1 @baz(i8* %this, i32 %x) #2
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br label %land.end
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land.end:
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%0 = phi i1 [ false, %entry ], [ true, %land.rhs ], [ %call, %lor.rhs ]
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ret i1 %0
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; Make sure machine block placement isn't confused by the conditional tail call,
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; but sees that it can fall through to the next block.
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; CHECK-LABEL: BlockPlacementTest
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; CHECK: je baz
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; CHECK-NOT: xor
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; CHECK: ret
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}
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%"class.std::basic_string" = type { %"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" }
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%"struct.std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Alloc_hider" = type { i8* }
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declare zeroext i1 @_Z20isValidIntegerSuffixN9__gnu_cxx17__normal_iteratorIPKcSsEES3_(i8*, i8*)
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define zeroext i1 @pr31257(%"class.std::basic_string"* nocapture readonly dereferenceable(8) %s) minsize {
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; CHECK-LABEL: pr31257
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entry:
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%_M_p.i.i = getelementptr inbounds %"class.std::basic_string", %"class.std::basic_string"* %s, i64 0, i32 0, i32 0
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%0 = load i8*, i8** %_M_p.i.i, align 8
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%arrayidx.i.i.i54 = getelementptr inbounds i8, i8* %0, i64 -24
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%_M_length.i.i55 = bitcast i8* %arrayidx.i.i.i54 to i64*
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%1 = load i64, i64* %_M_length.i.i55, align 8
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%add.ptr.i56 = getelementptr inbounds i8, i8* %0, i64 %1
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%it.sroa.0.0 = phi i8* [ %0, %entry ], [ %incdec.ptr.i, %for.inc ]
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%state.0 = phi i32 [ 0, %entry ], [ %state.1, %for.inc ]
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%cmp.i = icmp eq i8* %it.sroa.0.0, %add.ptr.i56
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br i1 %cmp.i, label %5, label %for.body
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for.body: ; preds = %for.cond
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switch i32 %state.0, label %for.inc [
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i32 0, label %sw.bb
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i32 1, label %sw.bb14
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i32 2, label %sw.bb22
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]
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sw.bb: ; preds = %for.body
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%2 = load i8, i8* %it.sroa.0.0, align 1
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switch i8 %2, label %if.else [
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i8 43, label %for.inc
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i8 45, label %for.inc
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]
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if.else: ; preds = %sw.bb
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%conv9 = zext i8 %2 to i32
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%isdigittmp45 = add nsw i32 %conv9, -48
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%isdigit46 = icmp ult i32 %isdigittmp45, 10
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br i1 %isdigit46, label %for.inc, label %cleanup.thread.loopexit
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sw.bb14: ; preds = %for.body
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%3 = load i8, i8* %it.sroa.0.0, align 1
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%conv16 = zext i8 %3 to i32
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%isdigittmp43 = add nsw i32 %conv16, -48
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%isdigit44 = icmp ult i32 %isdigittmp43, 10
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br i1 %isdigit44, label %for.inc, label %cleanup.thread.loopexit
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sw.bb22: ; preds = %for.body
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%4 = load i8, i8* %it.sroa.0.0, align 1
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%conv24 = zext i8 %4 to i32
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%isdigittmp = add nsw i32 %conv24, -48
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%isdigit = icmp ult i32 %isdigittmp, 10
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br i1 %isdigit, label %for.inc, label %if.else28
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; Make sure Machine Copy Propagation doesn't delete the mov to %ecx becaue it
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; thinks the conditional tail call clobbers it.
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; CHECK64-LABEL: .LBB3_11:
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; CHECK64: movzbl (%rdi), %ecx
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; CHECK64-NEXT: addl $-48, %ecx
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; CHECK64-NEXT: cmpl $10, %ecx
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; CHECK64-NEXT: movl %r9d, %ecx
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; CHECK64-NEXT: jae _Z20isValidIntegerSuffixN9__gnu_cxx17__normal_iteratorIPKcSsEE
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if.else28: ; preds = %sw.bb22
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%call34 = tail call zeroext i1 @_Z20isValidIntegerSuffixN9__gnu_cxx17__normal_iteratorIPKcSsEES3_(i8* nonnull %it.sroa.0.0, i8* %add.ptr.i56)
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br label %cleanup.thread
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for.inc: ; preds = %sw.bb, %sw.bb, %sw.bb22, %sw.bb14, %if.else, %for.body
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%state.1 = phi i32 [ %state.0, %for.body ], [ 1, %sw.bb ], [ 2, %if.else ], [ 2, %sw.bb14 ], [ 2, %sw.bb22 ], [ 1, %sw.bb ]
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%incdec.ptr.i = getelementptr inbounds i8, i8* %it.sroa.0.0, i64 1
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br label %for.cond
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; <label>:5: ; preds = %for.cond
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%cmp37 = icmp eq i32 %state.0, 2
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br label %cleanup.thread
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cleanup.thread.loopexit: ; preds = %if.else, %sw.bb14
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br label %cleanup.thread
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cleanup.thread: ; preds = %cleanup.thread.loopexit, %if.else28, %5
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%6 = phi i1 [ %cmp37, %5 ], [ %call34, %if.else28 ], [ false, %cleanup.thread.loopexit ]
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ret i1 %6
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}
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