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Re: [PATCH] FMA on trees
- From: Steve Ellcey <sje at cup dot hp dot com>
- To: Richard Guenther <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 8 Nov 2010 11:11:52 -0800 (PST)
- Subject: Re: [PATCH] FMA on trees
This patch seems to have broken -mno-fused-madd on IA64. I don't
know if it has broken it on other platforms too.
Also I now get about 30 failures on IA64 for gcc.dg/torture/builtin-math-2.c.
FAIL: gcc.dg/torture/builtin-math-2.c -O0 scan-tree-dump-times original "fma " 3
(30 or so more reports for fmaf and fmal and at various options)
It looks like the expand file contains FMA_EXPR instead of the builtin_fma
calls, as mentioned in the powerpc bug report for pr46353.
I tried various combinations of -ffp-contract and -fno-fused-madd on this
test but none had any effect.
Steve Ellcey
sje@cup.hp.com