[utils] Make .cfi_startproc optional for powerpc

Summary: llc sometimes may not emit .cfi_startproc which makes func_dict to have less entries.

Subscribers: nemanjai, llvm-commits

Differential Revision: https://reviews.llvm.org/D42144

llvm-svn: 322725
diff --git a/llvm/utils/update_llc_test_checks.py b/llvm/utils/update_llc_test_checks.py
index 57d6e57..7ea0431 100755
--- a/llvm/utils/update_llc_test_checks.py
+++ b/llvm/utils/update_llc_test_checks.py
@@ -59,7 +59,7 @@
 ASM_FUNCTION_PPC_RE = re.compile(
     r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
     r'\.Lfunc_begin[0-9]+:\n'
-    r'[ \t]+.cfi_startproc\n'
+    r'(?:[ \t]+.cfi_startproc\n)?'
     r'(?:\.Lfunc_[gl]ep[0-9]+:\n(?:[ \t]+.*?\n)*)*'
     r'(?P<body>.*?)\n'
     # This list is incomplete