[hot-cold-split] Name split functions with ".cold" suffix

Summary:
The current default of appending "_"+entry block label to the new
extracted cold function breaks demangling. Change the deliminator from
"_" to "." to enable demangling. Because the header block label will
be empty for release compile code, use "extracted" after the "." when
the label is empty.

Additionally, add a mechanism for the client to pass in an alternate
suffix applied after the ".", and have the hot cold split pass use
"cold."+Count, where the Count is currently 1 but can be used to
uniquely number multiple cold functions split out from the same function
with D53588.

Reviewers: sebpop, hiraditya

Subscribers: llvm-commits, erik.pilkington

Differential Revision: https://reviews.llvm.org/D53534

llvm-svn: 345178

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/test/Transforms/CodeExtractor/X86/InheritTargetAttributes.ll b/llvm/test/Transforms/CodeExtractor/X86/InheritTargetAttributes.ll
index 0f8a71907d8..e6a5113261e 100644
--- a/llvm/test/Transforms/CodeExtractor/X86/InheritTargetAttributes.ll
+++ b/llvm/test/Transforms/CodeExtractor/X86/InheritTargetAttributes.ll
@@ -36,5 +36,5 @@ entry:
 attributes #0 = { nounwind readnone }
 attributes #1 = { nounwind uwtable "target-cpu"="x86-64" "target-features"="+sse4.1" }
 
-; CHECK: define {{.*}} @inlinedFunc.1_if.then{{.*}} [[COUNT1:#[0-9]+]]
+; CHECK: define {{.*}} @inlinedFunc.1.if.then{{.*}} [[COUNT1:#[0-9]+]]
 ; CHECK: [[COUNT1]] = { {{.*}} "target-cpu"="x86-64" "target-features"="+sse4.1" }