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|
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
; This test is based on the following code:
;
; void test()
; {
; try {
; may_throw();
; } catch (int i) {
; handle_int(i);
; }
; }
;
; Parts of the IR have been hand-edited to simplify the test case.
; The full IR will be restored when Windows C++ EH support is complete.
;ModuleID = 'cppeh-catch-scalar.cpp'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
@_ZTIi = external constant i8*
; The function entry will be rewritten like this.
; CHECK: define void @_Z4testv() #0 {
; CHECK: entry:
; CHECK: [[I_PTR:\%.+]] = alloca i32, align 4
; CHECK: call void (...)* @llvm.frameescape(i32* [[I_PTR]])
; CHECK: invoke void @_Z9may_throwv()
; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
; Function Attrs: uwtable
define void @_Z4testv() #0 {
entry:
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
%i = alloca i32, align 4
invoke void @_Z9may_throwv()
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
br label %try.cont
; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* (i8*, i8*)* @_Z4testv.catch)
; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont]
lpad: ; preds = %entry
%tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
catch i8* bitcast (i8** @_ZTIi to i8*)
%tmp1 = extractvalue { i8*, i32 } %tmp, 0
store i8* %tmp1, i8** %exn.slot
%tmp2 = extractvalue { i8*, i32 } %tmp, 1
store i32 %tmp2, i32* %ehselector.slot
br label %catch.dispatch
; CHECK-NOT: catch-dispatch:
catch.dispatch: ; preds = %lpad
%sel = load i32, i32* %ehselector.slot
%tmp3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #3
%matches = icmp eq i32 %sel, %tmp3
br i1 %matches, label %catch, label %eh.resume
; CHECK-NOT: catch:
catch: ; preds = %catch.dispatch
%exn11 = load i8*, i8** %exn.slot
%i.i8 = bitcast i32* %i to i8*
call void @llvm.eh.begincatch(i8* %exn11, i8* %i.i8) #3
%tmp7 = load i32, i32* %i, align 4
call void @_Z10handle_inti(i32 %tmp7)
br label %invoke.cont2
; CHECK-NOT: invoke.cont2:
invoke.cont2: ; preds = %catch
call void @llvm.eh.endcatch() #3
br label %try.cont
try.cont: ; preds = %invoke.cont2, %invoke.cont
ret void
; CHECK-NOT: eh.resume:
eh.resume: ; preds = %catch.dispatch
%exn3 = load i8*, i8** %exn.slot
%sel4 = load i32, i32* %ehselector.slot
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn3, 0
%lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1
resume { i8*, i32 } %lpad.val5
; CHECK: }
}
; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*) {
; CHECK: entry:
; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
; CHECK: [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
; CHECK: [[TMP:\%.+]] = load i32, i32* [[I_PTR1]], align 4
; CHECK: call void @_Z10handle_inti(i32 [[TMP]])
; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont)
; CHECK: }
declare void @_Z9may_throwv() #1
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*) #2
declare void @llvm.eh.begincatch(i8*, i8*)
declare void @llvm.eh.endcatch()
declare void @_Z10handle_inti(i32) #1
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" }
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" }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
!llvm.ident = !{!0}
!0 = !{!"clang version 3.7.0 (trunk 227474) (llvm/trunk 227508)"}
|
