changeset 47d9409b2b7f in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=47d9409b2b7f
description:
BUILD: GCC 4.4.1/2 have a bug in their auto-vectorizer that we trip on
diffstat:
SConstruct | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diffs (18 lines):
diff -r aca917ca1ad5 -r 47d9409b2b7f SConstruct
--- a/SConstruct Mon Aug 23 11:18:42 2010 -0500
+++ b/SConstruct Mon Aug 23 11:18:42 2010 -0500
@@ -361,6 +361,14 @@
main.Append(CCFLAGS='-fno-strict-aliasing')
main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef'])
main.Append(CXXFLAGS='-Wno-deprecated')
+ # Read the GCC version to check for versions with bugs
+ # Note CCVERSION doesn't work here because it is run with the CC
+ # before we override it from the command line
+ gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False)
+ if not compareVersions(gcc_version, '4.4.1') or \
+ not compareVersions(gcc_version, '4.4.2'):
+ print 'Info: Tree vectorizer in GCC 4.4.1 & 4.4.2 is buggy, disabling.'
+ main.Append(CCFLAGS='-fno-tree-vectorize')
elif main['ICC']:
pass #Fix me... add warning flags once we clean up icc warnings
elif main['SUNCC']:
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