1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=gvn-hoist -S < %s | FileCheck %s 3 4target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" 5target triple = "i686-pc-windows-msvc18.0.0" 6 7%struct.S = type { ptr, ptr } 8 9declare void @f(ptr inalloca(<{ %struct.S }>)) 10 11 12; Check that we don't clone the %x alloca and insert it in the live range of 13; %argmem, which would break the inalloca contract. 14define void @test(i1 %b) { 15; CHECK-LABEL: @test( 16; CHECK-NEXT: entry: 17; CHECK-NEXT: [[X:%.*]] = alloca i8, align 1 18; CHECK-NEXT: [[INALLOCA_SAVE:%.*]] = call ptr @llvm.stacksave.p0() 19; CHECK-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_S:%.*]] }>, align 4 20; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[ARGMEM]], i32 0, i32 1 21; CHECK-NEXT: store ptr [[X]], ptr [[TMP0]], align 4 22; CHECK-NEXT: br i1 [[B:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]] 23; CHECK: true: 24; CHECK-NEXT: [[P:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[ARGMEM]], i32 0, i32 1 25; CHECK-NEXT: br label [[EXIT:%.*]] 26; CHECK: false: 27; CHECK-NEXT: [[P2:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[ARGMEM]], i32 0, i32 1 28; CHECK-NEXT: br label [[EXIT]] 29; CHECK: exit: 30; CHECK-NEXT: call void @f(ptr inalloca(<{ [[STRUCT_S]] }>) [[ARGMEM]]) 31; CHECK-NEXT: call void @llvm.stackrestore.p0(ptr [[INALLOCA_SAVE]]) 32; CHECK-NEXT: ret void 33; 34entry: 35 %x = alloca i8 36 %inalloca.save = call ptr @llvm.stacksave() 37 %argmem = alloca inalloca <{ %struct.S }>, align 4 38 br i1 %b, label %true, label %false 39 40true: 41 %p = getelementptr inbounds %struct.S, ptr %argmem, i32 0, i32 1 42 store ptr %x, ptr %p, align 4 43 br label %exit 44 45false: 46 %p2 = getelementptr inbounds %struct.S, ptr %argmem, i32 0, i32 1 47 store ptr %x, ptr %p2, align 4 48 br label %exit 49 50exit: 51 call void @f(ptr inalloca(<{ %struct.S }>) %argmem) 52 call void @llvm.stackrestore(ptr %inalloca.save) 53 ret void 54} 55 56declare ptr @llvm.stacksave() 57declare void @llvm.stackrestore(ptr) 58