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| author | Davide Italiano <davide@freebsd.org> | 2016-10-17 20:05:35 +0000 |
|---|---|---|
| committer | Davide Italiano <davide@freebsd.org> | 2016-10-17 20:05:35 +0000 |
| commit | 84bd58e915db2495ac91965f73b31e4f7d5244f4 (patch) | |
| tree | f141c9defceebfd711483cfe3f5c3bc68a758c5a /llvm/test/Transforms | |
| parent | 119a998ae3895ff360fc2ddb32f387927dbb2a33 (diff) | |
| download | bcm5719-llvm-84bd58e915db2495ac91965f73b31e4f7d5244f4.tar.gz bcm5719-llvm-84bd58e915db2495ac91965f73b31e4f7d5244f4.zip | |
[opt] Strip coverage if debug info is not present.
If -coverage is passed, but -g is not, clang populates the PassManager
pipeline with StripSymbols(debugOnly = true).
The stripSymbol pass therefore scans the list of named metadata,
drops !llvm.dbg.cu, but leaves !llvm.gcov and !0 (the compileUnit MD)
around. The verifier runs, and finds out that there's a CU not listed
in !llvm.dbg.cu (as it was previously dropped) -> crash.
When we strip debug info, so, check if there's coverage data,
and strip it as well, in order to avoid pending metadata left around.
Differential Revision: https://reviews.llvm.org/D25689
llvm-svn: 284418
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/StripSymbols/strip-cov.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/test/Transforms/StripSymbols/strip-cov.ll b/llvm/test/Transforms/StripSymbols/strip-cov.ll new file mode 100644 index 00000000000..ad74bdae514 --- /dev/null +++ b/llvm/test/Transforms/StripSymbols/strip-cov.ll @@ -0,0 +1,20 @@ +; RUN: opt -S %s -strip -o - | FileCheck %s + +; CHECK-NOT: !llvm.dbg.cu +; CHECK-NOT: !llvm.gcov + +; CHECK: !llvm.module.flags = !{!0} +; CHECK: !0 = !{i32 2, !"Debug Info Version", i32 3} + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3} +!llvm.gcov = !{!4} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 284352) (llvm/trunk 284353)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) +!1 = !DIFile(filename: "/dev/null", directory: "/home/davide/work/llvm/build/bin") +!2 = !{} +!3 = !{i32 2, !"Debug Info Version", i32 3} +!4 = !{!"/scratch/patatino/build/bin/null.gcno", !"/scratch/patatino/build/bin/null.gcda", !0} |
