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[Bug rtl-optimization/26449] [4.2/4.3 Regression] ICE in loop invariant motion
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Sep 2007 05:49:36 -0000
- Subject: [Bug rtl-optimization/26449] [4.2/4.3 Regression] ICE in loop invariant motion
- References: <bug-26449-11811@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #19 from ubizjak at gmail dot com 2007-09-14 05:49 -------
Zdenek, the fix in Comment #5 is wrong (please look at Comment #11 why), as
cofirmed by a couple of dupes. From PR 33428:
gcc.c-torture/execute/loop-15.c fails with -O1 -ftree-vectorize (x86_64):
loop-15.c: In function 'main':
loop-15.c:40: internal compiler error: in expand_simple_binop, at optabs.c:1306
#1 0x000000000072305f in expand_simple_binop (mode=V8SImode, code=VEC_CONCAT,
op0=0x2b48d59e1d80, op1=0x2b48d59e1e40, target=0x0, unsignedp=1,
methods=OPTAB_LIB_WIDEN) at /home/ssb/src/r/gcc43/gcc/optabs.c:1306
This bug blocks vectorization at -O3.
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Status|RESOLVED |REOPENED
Resolution|WORKSFORME |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26449