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| author | Richard Henderson <rth@redhat.com> | 2013-02-01 08:34:28 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2013-02-01 08:34:28 -0800 |
| commit | ff2a9d88b4748f1ccbf2e8e368fa499fa861c9c7 (patch) | |
| tree | 21b2dcda8ec561c8e749a3d2126cb2f5f40207f1 /gcc | |
| parent | 749af8ee126fea9757ecf38ea85093603114bd50 (diff) | |
| download | gcc-ff2a9d88b4748f1ccbf2e8e368fa499fa861c9c7.zip gcc-ff2a9d88b4748f1ccbf2e8e368fa499fa861c9c7.tar.gz gcc-ff2a9d88b4748f1ccbf2e8e368fa499fa861c9c7.tar.bz2 | |
alpha: widening multiply pattern
* config/alpha/alpha.md (umulditi3): New.
From-SVN: r195668
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 2 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.md | 15 |
2 files changed, 17 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dd9224d..1c66228 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -3,6 +3,8 @@ * config/rs6000/rs6000.md (smulditi3): New. (umulditi3): New. + * config/alpha/alpha.md (umulditi3): New. + 2013-02-01 David Edelsohn <dje.gcc@gmail.com> * config/rs6000/xcoff.h (ASM_OUTPUT_ALIGNED_COMMON): Use floor_log2. diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index f7f9397..4397527 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -719,6 +719,21 @@ "umulh %1,%2,%0" [(set_attr "type" "imul") (set_attr "opsize" "udi")]) + +(define_expand "umulditi3" + [(set (match_operand:TI 0 "register_operand") + (mult:TI + (zero_extend:TI (match_operand:DI 1 "reg_no_subreg_operand")) + (zero_extend:TI (match_operand:DI 2 "reg_no_subreg_operand"))))] + "" +{ + rtx l = gen_reg_rtx (DImode), h = gen_reg_rtx (DImode); + emit_insn (gen_muldi3 (l, operands[1], operands[2])); + emit_insn (gen_umuldi3_highpart (h, operands[1], operands[2])); + emit_move_insn (gen_lowpart (DImode, operands[0]), l); + emit_move_insn (gen_highpart (DImode, operands[0]), h); + DONE; +}) ;; The divide and remainder operations take their inputs from r24 and ;; r25, put their output in r27, and clobber r23 and r28 on all systems. |