[x86] Tweak my update script to use test case function names starting

with 'stress' to indicate that the specific output isn't interesting and
relax them to only check the last instruction (a ret).

I've updated the one test case that really uses this to name the one
'stress_test' which was actually producing output we can directly check.
With this, the script doesn't introduce noise when run over the v16 test
file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228033 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/vector-shuffle-128-v16.ll b/test/CodeGen/X86/vector-shuffle-128-v16.ll
index 933b0111efcb5fdaecca3b833e98ae084751825e..26847340845e92748243b6dc234167d8c5532ffd 100644 (file)
--- a/test/CodeGen/X86/vector-shuffle-128-v16.ll
+++ b/test/CodeGen/X86/vector-shuffle-128-v16.ll
@@ -429,12 +429,12 @@ entry:
   ret <16 x i8> %s.16.0
 }
 
-define <16 x i8> @stress_test1(<16 x i8> %s.0.5, <16 x i8> %s.0.8, <16 x i8> %s.0.9) noinline nounwind {
+define <16 x i8> @undef_test1(<16 x i8> %s.0.5, <16 x i8> %s.0.8, <16 x i8> %s.0.9) noinline nounwind {
 ; There is nothing interesting to check about these instructions other than
 ; that they survive codegen. However, we actually do better and delete all of
 ; them because the result is 'undef'.
 ;
-; ALL-LABEL: stress_test1:
+; ALL-LABEL: undef_test1:
 ; ALL:       # BB#0: # %entry
 ; ALL-NEXT:    retq
 entry:

diff --git a/utils/update_llc_test_checks.py b/utils/update_llc_test_checks.py
index 4125ea981ec1543ae00dfb71ebe65ced9c399180..c99872313dab7c56341e40b8265b79ee987d6824 100755 (executable)
--- a/utils/update_llc_test_checks.py
+++ b/utils/update_llc_test_checks.py
@@ -122,6 +122,9 @@ def main():
           continue
         f = m.group('f')
         f_asm = scrub_asm(m.group('body'))
+        if f.startswith('stress'):
+          # We only use the last line of the asm for stress tests.
+          f_asm = '\n'.join(f_asm.splitlines()[-1:])
         if args.verbose:
           print >>sys.stderr, 'Processing asm for function: ' + f
           for l in f_asm.splitlines():