[PATCH] D19316: [ppc64] Reenable sibling call optimization on ppc64 since fixed tsan library tail-call issue

[Chuang-Yu Cheng via llvm-commits]

cycheng created this revision.
cycheng added reviewers: kbarton, nemanjai.
cycheng added subscribers: hfinkel, tjablin, llvm-commits.

print-stack-trace.cc test failure of compiler-rt has been fixed by r266869 (http://reviews.llvm.org/D19148), so reenable sibling call optimization on ppc64

http://reviews.llvm.org/D19316

Files:
  docs/ReleaseNotes.rst
  lib/Target/PowerPC/PPCISelLowering.cpp

Index: lib/Target/PowerPC/PPCISelLowering.cpp
===================================================================
--- lib/Target/PowerPC/PPCISelLowering.cpp
+++ lib/Target/PowerPC/PPCISelLowering.cpp
@@ -55,7 +55,7 @@
 static cl::opt<bool> DisablePPCUnaligned("disable-ppc-unaligned",
 cl::desc("disable unaligned load/store generation on PPC"), cl::Hidden);
 
-static cl::opt<bool> DisableSCO("disable-ppc-sco", cl::init(true),
+static cl::opt<bool> DisableSCO("disable-ppc-sco",
 cl::desc("disable sibling call optimization on ppc"), cl::Hidden);
 
 STATISTIC(NumTailCalls, "Number of tail calls");
Index: docs/ReleaseNotes.rst
===================================================================
--- docs/ReleaseNotes.rst
+++ docs/ReleaseNotes.rst
@@ -104,6 +104,7 @@
 
  Moved some optimizations from O3 to O2 (D18562)
 
+* Enable sibling call optimization on ppc64 ELFv1/ELFv2 abi
 
 Changes to the X86 Target
 -------------------------


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D19316.54340.patch
Type: text/x-patch
Size: 941 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20160420/976936bf/attachment.bin>