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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2015-12-22 10:42:47 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2015-12-22 10:42:47 +0000 |
| commit | dda5c83188f8a345990dfc6577b348a0240ba440 (patch) | |
| tree | cb8b4becdcc2d8e585957e830aac41f403c8d6be /gcc | |
| parent | 18fccdb440fff68ec10ec448261efaa3cd1d01d7 (diff) | |
| download | gcc-dda5c83188f8a345990dfc6577b348a0240ba440.zip gcc-dda5c83188f8a345990dfc6577b348a0240ba440.tar.gz gcc-dda5c83188f8a345990dfc6577b348a0240ba440.tar.bz2 | |
[combine] Check WORD_REGISTER_OPERATIONS normally rather than through preprocessor
* combine.c (simplify_comparison): Convert preprocessor check of
WORD_REGISTER_OPERATIONS into runtime check.
From-SVN: r231899
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 5 |
2 files changed, 7 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index da6b923..b314c1a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2015-12-22 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * combine.c (simplify_comparison): Convert preprocessor check of + WORD_REGISTER_OPERATIONS into runtime check. + 2015-12-22 Eric Botcazou <ebotcazou@adacore.com> PR debug/60756 diff --git a/gcc/combine.c b/gcc/combine.c index 317a4b0..a29ae7b 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11437,10 +11437,10 @@ simplify_comparison (enum rtx_code code, rtx *pop0, rtx *pop1) /* Try a few ways of applying the same transformation to both operands. */ while (1) { -#if !WORD_REGISTER_OPERATIONS /* The test below this one won't handle SIGN_EXTENDs on these machines, so check specially. */ - if (code != GTU && code != GEU && code != LTU && code != LEU + if (!WORD_REGISTER_OPERATIONS + && code != GTU && code != GEU && code != LTU && code != LEU && GET_CODE (op0) == ASHIFTRT && GET_CODE (op1) == ASHIFTRT && GET_CODE (XEXP (op0, 0)) == ASHIFT && GET_CODE (XEXP (op1, 0)) == ASHIFT @@ -11460,7 +11460,6 @@ simplify_comparison (enum rtx_code code, rtx *pop0, rtx *pop1) op0 = SUBREG_REG (XEXP (XEXP (op0, 0), 0)); op1 = SUBREG_REG (XEXP (XEXP (op1, 0), 0)); } -#endif /* If both operands are the same constant shift, see if we can ignore the shift. We can if the shift is a rotate or if the bits shifted out of |