| ; RUN: opt < %s -debugify -basicaa -dse -S | FileCheck %s |
| |
| target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" |
| |
| declare noalias i8* @malloc(i32) |
| |
| declare void @test_f() |
| |
| define i32* @test_salvage() { |
| ; Check that all four original local variables have their values preserved. |
| ; CHECK-LABEL: @test_salvage() |
| ; CHECK-NEXT: malloc |
| ; CHECK-NEXT: @llvm.dbg.value(metadata i8* %p, metadata ![[p:.*]], metadata !DIExpression()) |
| ; CHECK-NEXT: bitcast |
| ; CHECK-NEXT: @llvm.dbg.value(metadata i32* %P, metadata ![[P:.*]], metadata !DIExpression()) |
| ; CHECK-NEXT: @llvm.dbg.value(metadata i32* %P, metadata ![[DEAD:.*]], metadata !DIExpression(DW_OP_deref)) |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %P, metadata ![[DEAD2:.*]], metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 1, DW_OP_stack_value)) |
| ; CHECK-NEXT: call void @test_f() |
| ; CHECK-NEXT: store i32 0, i32* %P |
| |
| %p = tail call i8* @malloc(i32 4) |
| %P = bitcast i8* %p to i32* |
| %DEAD = load i32, i32* %P |
| %DEAD2 = add i32 %DEAD, 1 |
| store i32 %DEAD2, i32* %P |
| call void @test_f() |
| store i32 0, i32* %P |
| ret i32* %P |
| } |
| |
| ; CHECK: ![[p]] = !DILocalVariable(name: "1" |
| ; CHECK: ![[P]] = !DILocalVariable(name: "2" |
| ; CHECK: ![[DEAD]] = !DILocalVariable(name: "3" |
| ; CHECK: ![[DEAD2]] = !DILocalVariable(name: "4" |
