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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --prefix-filecheck-ir-name abc
; RUN: opt -dse -S < %s | FileCheck %s
; Make sure invokes are not removed as dead stores.
define void @test_nounwind_invoke() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @test_nounwind_invoke(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4
; CHECK-NEXT: invoke void @foo(i32* [[TMP]])
; CHECK-NEXT: to label [[BB1:%.*]] unwind label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @llvm.lifetime.end.p0i32(i64 4, i32* [[TMP]])
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: [[ABCTMP1:%.*]] = landingpad { i8*, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: resume { i8*, i32 } [[ABCTMP1]]
;
bb:
%tmp = alloca i32, align 4
; 'foo' is 'argmemonly', meaning it can only write to memory pointed by %tmp.
; And this def is killed by 'call @llvm.lifetime.end.p0i32' in bb1 without
; being used elsewhere, becoming a dead store. But we shouldn't remove this
; because invokes are terminators and thus cannot be removed.
invoke void @foo(i32* %tmp)
to label %bb1 unwind label %bb2
bb1: ; preds = %bb
call void @llvm.lifetime.end.p0i32(i64 4, i32* %tmp)
ret void
bb2: ; preds = %bb
%tmp1 = landingpad { i8*, i32 }
cleanup
resume { i8*, i32 } %tmp1
}
; Function Attrs: argmemonly nocallback nofree nosync nounwind willreturn
declare void @llvm.lifetime.end.p0i32(i64 immarg, i32* nocapture) #0
; Function Attrs: argmemonly nounwind willreturn
declare void @foo(i32*) #1
declare i32 @__gxx_personality_v0(...)
attributes #0 = { argmemonly nocallback nofree nosync nounwind willreturn }
attributes #1 = { argmemonly nounwind willreturn }
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