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| author | Andreas Krebbel <Andreas.Krebbel@de.ibm.com> | 2012-12-20 15:20:06 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2012-12-20 15:20:06 +0000 |
| commit | 5ff3c4f398f344051ac0495ae9aecad7af83dd62 (patch) | |
| tree | 3fffded1757ced8661367ad75f348d611b857dc1 /gcc/config/arm/arm.c | |
| parent | 8ed812cc4be88f3bd042cecfa42a402df08d10d0 (diff) | |
| download | gcc-5ff3c4f398f344051ac0495ae9aecad7af83dd62.tar.gz | |
re PR regression/55754 (FAIL: gcc.target/arm/unsigned-extend-2.c scan-assembler ands)
2012-12-20 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
PR target/55754
* config/arm/arm.c (arm_canonicalize_comparison): Remove
op0_preserve_value check for zero_extend to and transformation.
From-SVN: r194636
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index be4428b9206..4484bc92364 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -3619,8 +3619,7 @@ arm_canonicalize_comparison (int *code, rtx *op0, rtx *op1, /* If *op0 is (zero_extend:SI (subreg:QI (reg:SI) 0)) and comparing with const0_rtx, change it to (and:SI (reg:SI) (const_int 255)), to facilitate possible combining with a cmp into 'ands'. */ - if (!op0_preserve_value - && mode == SImode + if (mode == SImode && GET_CODE (*op0) == ZERO_EXTEND && GET_CODE (XEXP (*op0, 0)) == SUBREG && GET_MODE (XEXP (*op0, 0)) == QImode |