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| author | Jeffrey A Law <law@cygnus.com> | 1999-03-09 01:09:52 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-03-08 18:09:52 -0700 |
| commit | d626200a86646ffd7997d5eb50f5754781a0e6bf (patch) | |
| tree | b2df591ecc5bcbff690915a28ca58a8ca9283688 /gcc | |
| parent | 4abcd5db62d810f681a13131e93efc1dfc2e58e2 (diff) | |
| download | gcc-d626200a86646ffd7997d5eb50f5754781a0e6bf.zip gcc-d626200a86646ffd7997d5eb50f5754781a0e6bf.tar.gz gcc-d626200a86646ffd7997d5eb50f5754781a0e6bf.tar.bz2 | |
i386.md (zero_extendhisi2): Split into an expander and anonymous pattern.
* i386.md (zero_extendhisi2): Split into an expander and anonymous
pattern. Add new anonymous pattern for use when optimizing for
size or for the PPro.
(zero_extendqihi2, zero_extendqisi2): Likewise.
From-SVN: r25650
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 52 |
2 files changed, 53 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3a5dea4..b8cdfdf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +Tue Mar 9 02:08:17 1999 Jeffrey A Law (law@cygnus.com) + + * i386.md (zero_extendhisi2): Split into an expander and anonymous + pattern. Add new anonymous pattern for use when optimizing for + size or for the PPro. + (zero_extendqihi2, zero_extendqisi2): Likewise. + Mon Mar 8 23:43:47 1999 Richard Henderson <rth@cygnus.com> * haifa-sched.c (sched_analyze_1): Fix last change -- add clobber diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 8ae917c..8c3f415 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -1789,10 +1789,25 @@ ;;- zero extension instructions ;; See comments by `andsi' for when andl is faster than movzx. -(define_insn "zero_extendhisi2" +(define_expand "zero_extendhisi2" + [(set (match_operand:SI 0 "register_operand" "") + (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "")))] + "" + "") + +;; When optimizing for the PPro/PII or code size, always use movzwl. +;; We want to use a different pattern so we can use different constraints +;; than the generic pattern. +(define_insn "" + [(set (match_operand:SI 0 "register_operand" "=r") + (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "rm")))] + "(optimize_size || (int)ix86_cpu == (int)PROCESSOR_PENTIUMPRO)" + "* return AS2 (movz%W0%L0,%1,%0);") + +(define_insn "" [(set (match_operand:SI 0 "register_operand" "=r,&r,?r") (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand" "0,rm,rm")))] - "" + "! (optimize_size || (int)ix86_cpu == (int)PROCESSOR_PENTIUMPRO)" "* { rtx xops[2]; @@ -1853,10 +1868,23 @@ (const_int 65535)))] "operands[2] = gen_rtx_REG (HImode, true_regnum (operands[0]));") -(define_insn "zero_extendqihi2" +(define_expand "zero_extendqihi2" + [(set (match_operand:HI 0 "register_operand" "") + (zero_extend:HI (match_operand:QI 1 "nonimmediate_operand" "")))] + "" + "") + +(define_insn "" + [(set (match_operand:HI 0 "register_operand" "=r") + (zero_extend:HI (match_operand:QI 1 "nonimmediate_operand" "qm")))] + "optimize_size || (int)ix86_cpu == (int)PROCESSOR_PENTIUMPRO" + + "* return AS2 (movz%B0%W0,%1,%0);") + +(define_insn "" [(set (match_operand:HI 0 "register_operand" "=q,&q,?r") (zero_extend:HI (match_operand:QI 1 "nonimmediate_operand" "0,qm,qm")))] - "" + "! (optimize_size || (int)ix86_cpu == (int)PROCESSOR_PENTIUMPRO)" "* { rtx xops[2]; @@ -1934,10 +1962,22 @@ FAIL; operands[2] = gen_rtx_REG (HImode, REGNO (operands[1]));") -(define_insn "zero_extendqisi2" +(define_expand "zero_extendqisi2" + [(set (match_operand:SI 0 "register_operand" "") + (zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "")))] + "" + "") + +(define_insn "" + [(set (match_operand:SI 0 "register_operand" "=r") + (zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "qm")))] + "optimize_size || (int)ix86_cpu == (int)PROCESSOR_PENTIUMPRO" + "* return AS2 (movz%B0%L0,%1,%0);") + +(define_insn "" [(set (match_operand:SI 0 "register_operand" "=q,&q,?r") (zero_extend:SI (match_operand:QI 1 "nonimmediate_operand" "0,qm,qm")))] - "" + "! (optimize_size || (int)ix86_cpu == (int)PROCESSOR_PENTIUMPRO)" "* { rtx xops[2]; |