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| author | Vedant Kumar <vsk@apple.com> | 2018-02-15 22:26:18 +0000 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2018-02-15 22:26:18 +0000 |
| commit | 1df820ecd722add744021dbdb59fa42828f8ca92 (patch) | |
| tree | 06689780ff3e0b2388fd815f5763be3e1ed2aa9f /llvm/test | |
| parent | 9967378eba5fcbbdb3bce4ce5c06af9fdea8f3d1 (diff) | |
| download | bcm5719-llvm-1df820ecd722add744021dbdb59fa42828f8ca92.tar.gz bcm5719-llvm-1df820ecd722add744021dbdb59fa42828f8ca92.zip | |
[DCE] Salvage debug info from dead insts
This results in small increases in the size of the .debug_loc section
and the number of unique source variables in a stage2 build of opt.
llvm-svn: 325301
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Transforms/DCE/basic.ll | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/llvm/test/Transforms/DCE/basic.ll b/llvm/test/Transforms/DCE/basic.ll index c2a56594c91..6282ac78e75 100644 --- a/llvm/test/Transforms/DCE/basic.ll +++ b/llvm/test/Transforms/DCE/basic.ll @@ -1,11 +1,15 @@ -; RUN: opt -dce -S < %s | FileCheck %s -; RUN: opt -passes=dce -S < %s | FileCheck %s +; RUN: opt -debugify -dce -S < %s | FileCheck %s +; RUN: opt -passes='module(debugify),function(dce)' -S < %s | FileCheck %s ; CHECK-LABEL: @test define void @test() { -; CHECK-NOT: add %add = add i32 1, 2 -; CHECK-NOT: sub +; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 1, metadata [[add:![0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 2, DW_OP_stack_value)) %sub = sub i32 %add, 1 +; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 1, metadata [[sub:![0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 2, DW_OP_constu, 1, DW_OP_minus, DW_OP_stack_value)) +; CHECK-NEXT: ret void ret void } + +; CHECK: [[add]] = !DILocalVariable +; CHECK: [[sub]] = !DILocalVariable |
