[PATCH] D49467: Fix inconsistency with/without debug information (-g)
Jeroen Dobbelaere via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Jul 18 02:58:59 PDT 2018
jeroen.dobbelaere created this revision.
jeroen.dobbelaere added reviewers: hfinkel, probinson.
Herald added subscribers: llvm-commits, JDevlieghere, hiraditya, aprantl.
This fixes an inconsistency in code generation when compiling with or without debug information (-g).
When debug information is available in an empty block, the original test would fail, resulting in possibly different code.
Repository:
rL LLVM
https://reviews.llvm.org/D49467
Files:
llvm/lib/CodeGen/CodeGenPrepare.cpp
Index: llvm/lib/CodeGen/CodeGenPrepare.cpp
===================================================================
--- llvm/lib/CodeGen/CodeGenPrepare.cpp
+++ llvm/lib/CodeGen/CodeGenPrepare.cpp
@@ -606,7 +606,7 @@
isa<IndirectBrInst>(Pred->getTerminator())))
return true;
- if (BB->getTerminator() != BB->getFirstNonPHI())
+ if (BB->getTerminator() != BB->getFirstNonPHIOrDbg())
return true;
// We use a simple cost heuristic which determine skipping merging is
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