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| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2013-04-08 15:59:41 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2013-04-08 16:59:41 +0100 |
| commit | 2ccc703d2ee849e502ebcf9fec62e57a14a9bc18 (patch) | |
| tree | 46d47865b1a985bd60629f4fb1cb063bc1ba1864 /gcc/config | |
| parent | 5138e18df36445c37b8d46809e7a58617363abc5 (diff) | |
| download | gcc-2ccc703d2ee849e502ebcf9fec62e57a14a9bc18.zip gcc-2ccc703d2ee849e502ebcf9fec62e57a14a9bc18.tar.gz gcc-2ccc703d2ee849e502ebcf9fec62e57a14a9bc18.tar.bz2 | |
epiphany.md (mov_f+2): New peephole2 pattern.
* config/epiphany/epiphany.md (mov_f+2): New peephole2 pattern.
(cstoresi4): Also allow re-use of zero result when doing a NE
comparison to a non-zero operand.
Use (clobber (sratch)) for first insn if the gpr output is not needed.
From-SVN: r197590
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/epiphany/epiphany.md | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/gcc/config/epiphany/epiphany.md b/gcc/config/epiphany/epiphany.md index 1908fed..4bb8da3 100644 --- a/gcc/config/epiphany/epiphany.md +++ b/gcc/config/epiphany/epiphany.md @@ -1789,14 +1789,30 @@ (const_int 0))) (set (match_dup 0) (logical_op:SI (match_dup 1) (match_dup 2)))])]) +(define_peephole2 + [(parallel + [(set (match_operand:SI 0 "gpr_operand" "=r") + (logical_op:SI (match_operand:SI 1 "gpr_operand" "r") + (match_operand:SI 2 "gpr_operand" "%r"))) + (clobber (reg:CC CC_REGNUM))]) + (parallel + [(set (reg:CC CC_REGNUM) + (compare:CC (match_dup 0) (const_int 0))) + (clobber (match_operand:SI 3 "gpr_operand" "=r"))])] + "" + [(parallel + [(set (reg:CC CC_REGNUM) + (compare:CC (logical_op:SI (match_dup 1) (match_dup 2)) + (const_int 0))) + (set (match_dup 0) (logical_op:SI (match_dup 1) (match_dup 2)))])]) + (define_expand "cstoresi4" [(parallel [(set (reg:CC CC_REGNUM) (match_operand:SI 1 "comparison_operator")) - (set (match_operand:SI 0 "gpr_operand" "=r") - (match_operand:SI 2 "" ""))]) + (match_operand:SI 2 "" "")]) (set (match_dup 0) (match_operand:SI 3 "arith_operand" "")) - (set (match_dup 0) + (set (match_operand:SI 0 "gpr_operand" "=r") (if_then_else:SI (match_dup 4) (match_dup 5) (match_dup 0)))] "" { @@ -1813,12 +1829,18 @@ else operands[2] = force_reg (SImode, operands[2]); operands[1] = gen_rtx_COMPARE (CCmode, operands[2], operands[3]); - if (operands[3] != const0_rtx) - operands[2] = gen_rtx_MINUS (SImode, operands[2], operands[3]); - if (cmp_code != NE || operands[3] != const0_rtx) - operands[3] = const0_rtx; + if (cmp_code != NE) + { + operands[2] = gen_rtx_CLOBBER (VOIDmode, gen_rtx_SCRATCH (SImode)); + operands[3] = const0_rtx; + } else - operands[3] = operands[0]; + { + if (operands[3] != const0_rtx) + operands[2] = gen_rtx_MINUS (SImode, operands[2], operands[3]); + operands[2] = gen_rtx_SET (VOIDmode, operands[0], operands[2]); + operands[3] = operands[0]; + } operands[4] = gen_rtx_fmt_ee (cmp_code, SImode, gen_rtx_REG (CCmode, CC_REGNUM), const0_rtx); operands[5] = force_reg (SImode, GEN_INT (STORE_FLAG_VALUE)); |