127 lines
4.6 KiB
LLVM
127 lines
4.6 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test is based on the following code:
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;
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; void test()
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; {
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; try {
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; may_throw();
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; } catch (int i) {
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; handle_int(i);
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; }
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; }
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;
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; Parts of the IR have been hand-edited to simplify the test case.
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; The full IR will be restored when Windows C++ EH support is complete.
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;ModuleID = 'cppeh-catch-scalar.cpp'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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@_ZTIi = external constant i8*
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; The function entry will be rewritten like this.
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; CHECK: define void @_Z4testv() #0 {
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; CHECK: entry:
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; CHECK: [[I_PTR:\%.+]] = alloca i32, align 4
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; CHECK: call void (...)* @llvm.frameescape(i32* [[I_PTR]])
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; CHECK: invoke void @_Z9may_throwv()
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; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
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; Function Attrs: uwtable
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define void @_Z4testv() #0 {
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entry:
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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%i = alloca i32, align 4
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invoke void @_Z9may_throwv()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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br label %try.cont
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; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
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; CHECK: [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
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; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions({ i8*, i32 } [[LPAD_VAL]], i32 0, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch to i8*))
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; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont]
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lpad: ; preds = %entry
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%tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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catch i8* bitcast (i8** @_ZTIi to i8*)
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%tmp1 = extractvalue { i8*, i32 } %tmp, 0
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store i8* %tmp1, i8** %exn.slot
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%tmp2 = extractvalue { i8*, i32 } %tmp, 1
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store i32 %tmp2, i32* %ehselector.slot
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br label %catch.dispatch
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; CHECK-NOT: catch-dispatch:
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catch.dispatch: ; preds = %lpad
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%sel = load i32, i32* %ehselector.slot
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%tmp3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #3
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%matches = icmp eq i32 %sel, %tmp3
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br i1 %matches, label %catch, label %eh.resume
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; CHECK-NOT: catch:
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catch: ; preds = %catch.dispatch
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%exn11 = load i8*, i8** %exn.slot
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%i.i8 = bitcast i32* %i to i8*
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call void @llvm.eh.begincatch(i8* %exn11, i8* %i.i8) #3
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%tmp7 = load i32, i32* %i, align 4
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call void @_Z10handle_inti(i32 %tmp7)
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br label %invoke.cont2
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; CHECK-NOT: invoke.cont2:
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invoke.cont2: ; preds = %catch
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call void @llvm.eh.endcatch() #3
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br label %try.cont
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try.cont: ; preds = %invoke.cont2, %invoke.cont
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ret void
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; CHECK-NOT: eh.resume:
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eh.resume: ; preds = %catch.dispatch
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%exn3 = load i8*, i8** %exn.slot
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%sel4 = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn3, 0
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%lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1
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resume { i8*, i32 } %lpad.val5
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; CHECK: }
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}
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; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*) {
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; CHECK: entry:
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; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
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; CHECK: [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
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; CHECK: [[TMP:\%.+]] = load i32, i32* [[I_PTR1]], align 4
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; CHECK: call void @_Z10handle_inti(i32 [[TMP]])
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; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont)
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; CHECK: }
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declare void @_Z9may_throwv() #1
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #2
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declare void @llvm.eh.begincatch(i8*, i8*)
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declare void @llvm.eh.endcatch()
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declare void @_Z10handle_inti(i32) #1
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.7.0 (trunk 227474) (llvm/trunk 227508)"}
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