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| author | Richard Guenther <rguenther@suse.de> | 2011-06-10 12:19:30 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-06-10 12:19:30 +0000 |
| commit | 7871eee372692f471507a857b8eac77598fbdb03 (patch) | |
| tree | eb3483391707f9daf8809624bb34f846854ef083 /gcc/fold-const.c | |
| parent | dae957ae7563f1cba453d1c785a893eb8bf13d3d (diff) | |
| download | gcc-7871eee372692f471507a857b8eac77598fbdb03.zip gcc-7871eee372692f471507a857b8eac77598fbdb03.tar.gz gcc-7871eee372692f471507a857b8eac77598fbdb03.tar.bz2 | |
re PR tree-optimization/49361 (Huge 470.lbm regression)
2011-06-10 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49361
* fold-const.c (fold_binary_loc): Only fold x * x to pow (x, 2.0)
when not already in gimple form.
From-SVN: r174903
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 9a3f8cb..e1a497e 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -10519,7 +10519,8 @@ fold_binary_loc (location_t loc, } /* Optimize x*x as pow(x,2.0), which is expanded as x*x. */ - if (optimize_function_for_speed_p (cfun) + if (!in_gimple_form + && optimize_function_for_speed_p (cfun) && operand_equal_p (arg0, arg1, 0)) { tree powfn = mathfn_built_in (type, BUILT_IN_POW); |