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[Bug bootstrap/53710] [4.8 Regression] Bootstrap failure
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 17 Jun 2012 20:01:29 +0000
- Subject: [Bug bootstrap/53710] [4.8 Regression] Bootstrap failure
- Auto-submitted: auto-generated
- References: <bug-53710-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53710
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2012-06-17 20:01:29 UTC ---
(In reply to comment #2)
> Are you sure about the revision?
>
> Probably dup of PR53706.
They could be related since bootstrap passes when I
turn off FMA on i386:
diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index 94f3819..a1fa2b7 100644
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -445,7 +445,9 @@ const char *host_detect_local_cpu (int argc, const char
**argv)
has_popcnt = ecx & bit_POPCNT;
has_aes = ecx & bit_AES;
has_pclmul = ecx & bit_PCLMUL;
+#if 0
has_fma = ecx & bit_FMA;
+#endif
has_f16c = ecx & bit_F16C;
has_rdrnd = ecx & bit_RDRND;
and IA64 has FMA.