diff options
| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2017-03-09 00:03:37 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2017-03-09 00:03:37 +0000 |
| commit | 8537d9994dbd041da176059449d060f2f320fc1a (patch) | |
| tree | 0f11e5da24cceeb505e1b33c677f09d868b95cc9 /llvm/test/Transforms/ConstantMerge/merge-dbg.ll | |
| parent | 12d0c8d662a8e679c9d889425e0dc631487764fb (diff) | |
| download | bcm5719-llvm-8537d9994dbd041da176059449d060f2f320fc1a.tar.gz bcm5719-llvm-8537d9994dbd041da176059449d060f2f320fc1a.zip | |
Don't merge global constants with non-dbg metadata.
!type metadata can not be dropped. An alternative to this is adding
!type metadata from the replaced globals to the replacement, but that
may weaken type tests and make them slower at the same time.
The merged global gets !dbg metadata from replaced globals, and can
end up with multiple debug locations.
llvm-svn: 297327
Diffstat (limited to 'llvm/test/Transforms/ConstantMerge/merge-dbg.ll')
| -rw-r--r-- | llvm/test/Transforms/ConstantMerge/merge-dbg.ll | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/llvm/test/Transforms/ConstantMerge/merge-dbg.ll b/llvm/test/Transforms/ConstantMerge/merge-dbg.ll new file mode 100644 index 00000000000..bc33248514e --- /dev/null +++ b/llvm/test/Transforms/ConstantMerge/merge-dbg.ll @@ -0,0 +1,32 @@ +; RUN: opt < %s -constmerge -S | FileCheck %s + +; CHECK: = constant i32 1, !dbg [[A:![0-9]+]], !dbg [[B:![0-9]+]] +@a = internal constant i32 1, !dbg !0 +@b = unnamed_addr constant i32 1, !dbg !9 + +define void @test1(i32** %P1, i32** %P2) { + store i32* @a, i32** %P1 + store i32* @b, i32** %P2 + ret void +} + +!llvm.dbg.cu = !{!2} +!llvm.module.flags = !{!7, !8} + +; CHECK: [[A]] = !DIGlobalVariableExpression(var: [[VA:![0-9]+]]) +; CHECK: [[VA]] = distinct !DIGlobalVariable(name: "y" +; CHECK: [[B]] = !DIGlobalVariableExpression(var: [[VB:![0-9]+]]) +; CHECK: [[VB]] = distinct !DIGlobalVariable(name: "x" + +!0 = !DIGlobalVariableExpression(var: !1) +!1 = distinct !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) +!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 5.0.0 (trunk 297227) (llvm/trunk 297234)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) +!3 = !DIFile(filename: "1.cc", directory: "/build") +!4 = !{} +!5 = !{!0} +!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!7 = !{i32 2, !"Dwarf Version", i32 4} +!8 = !{i32 2, !"Debug Info Version", i32 3} + +!9 = !DIGlobalVariableExpression(var: !10) +!10 = distinct !DIGlobalVariable(name: "y", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) |
