1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --prefix-filecheck-ir-name abc 2; RUN: opt -passes=dse -S < %s | FileCheck %s 3 4; Make sure invokes are not removed as dead stores. 5define void @test_nounwind_invoke() personality ptr @__gxx_personality_v0 { 6; CHECK-LABEL: @test_nounwind_invoke( 7; CHECK-NEXT: bb: 8; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4 9; CHECK-NEXT: invoke void @foo(ptr [[TMP]]) 10; CHECK-NEXT: to label [[BB1:%.*]] unwind label [[BB2:%.*]] 11; CHECK: bb1: 12; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[TMP]]) 13; CHECK-NEXT: ret void 14; CHECK: bb2: 15; CHECK-NEXT: [[ABCTMP1:%.*]] = landingpad { ptr, i32 } 16; CHECK-NEXT: cleanup 17; CHECK-NEXT: resume { ptr, i32 } [[ABCTMP1]] 18; 19bb: 20 %tmp = alloca i32, align 4 21 ; 'foo' is 'argmemonly', meaning it can only write to memory pointed by %tmp. 22 ; And this def is killed by 'call @llvm.lifetime.end.p0' in bb1 without 23 ; being used elsewhere, becoming a dead store. But we shouldn't remove this 24 ; because invokes are terminators and thus cannot be removed. 25 invoke void @foo(ptr %tmp) 26 to label %bb1 unwind label %bb2 27 28bb1: ; preds = %bb 29 call void @llvm.lifetime.end.p0(i64 4, ptr %tmp) 30 ret void 31 32bb2: ; preds = %bb 33 %tmp1 = landingpad { ptr, i32 } 34 cleanup 35 resume { ptr, i32 } %tmp1 36} 37 38; Function Attrs: argmemonly nocallback nofree nosync nounwind willreturn 39declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0 40; Function Attrs: argmemonly nounwind willreturn 41declare void @foo(ptr) #1 42declare i32 @__gxx_personality_v0(...) 43 44attributes #0 = { argmemonly nocallback nofree nosync nounwind willreturn } 45attributes #1 = { argmemonly nounwind willreturn } 46