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| author | Nicolas Pitre <nico@cam.org> | 2006-01-31 17:05:03 +0000 |
|---|---|---|
| committer | Nicolas Pitre <nico@gcc.gnu.org> | 2006-01-31 17:05:03 +0000 |
| commit | 0cb381f0424c0212a0a7d432804b4fd92bec837c (patch) | |
| tree | 3339eb0a3739ab4767b5d5c18af70934c28d0067 /gcc | |
| parent | aa2192f89e15c5586205d0ef5083cb39bf676a43 (diff) | |
| download | gcc-0cb381f0424c0212a0a7d432804b4fd92bec837c.zip gcc-0cb381f0424c0212a0a7d432804b4fd92bec837c.tar.gz gcc-0cb381f0424c0212a0a7d432804b4fd92bec837c.tar.bz2 | |
arm.md (smaxsi3): Make aware of smax_m1.
* arm.md (smaxsi3): Make aware of smax_m1.
(smax_m1): New.
From-SVN: r110443
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/arm/arm.md | 11 |
2 files changed, 15 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d26968f..04a4770 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2006-01-31 Nicolas Pitre <nico@cam.org> + + * arm.md (smaxsi3): Make aware of smax_m1. + (smax_m1): New. + 2006-01-31 Nathan Sidwell <nathan@codesourcery.com> * gcc/config/m68k/lb1sf68.asm: Use moveq to load small constants. diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index 2442ed3..3853afc 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -2481,7 +2481,7 @@ (clobber (reg:CC CC_REGNUM))])] "TARGET_ARM" " - if (operands[2] == const0_rtx) + if (operands[2] == const0_rtx || operands[2] == constm1_rtx) { /* No need for a clobber of the condition code register here. */ emit_insn (gen_rtx_SET (VOIDmode, operands[0], @@ -2500,6 +2500,15 @@ [(set_attr "predicable" "yes")] ) +(define_insn "*smax_m1" + [(set (match_operand:SI 0 "s_register_operand" "=r") + (smax:SI (match_operand:SI 1 "s_register_operand" "r") + (const_int -1)))] + "TARGET_ARM" + "orr%?\\t%0, %1, %1, asr #31" + [(set_attr "predicable" "yes")] +) + (define_insn "*smax_insn" [(set (match_operand:SI 0 "s_register_operand" "=r,r") (smax:SI (match_operand:SI 1 "s_register_operand" "%0,?r") |