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| author | Jan Hubicka <hubicka@freesoft.cz> | 1999-04-13 16:43:53 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1999-04-13 07:43:53 -0700 |
| commit | 813d245a1521388d8bc8ccff29270a664d1273a7 (patch) | |
| tree | a00cd7e6aa86511d03efcc1c1191d15d729bfcfc | |
| parent | 55abf18a772c91bbb07d393df64ca88e573032b1 (diff) | |
| download | gcc-813d245a1521388d8bc8ccff29270a664d1273a7.zip gcc-813d245a1521388d8bc8ccff29270a664d1273a7.tar.gz gcc-813d245a1521388d8bc8ccff29270a664d1273a7.tar.bz2 | |
Jan Hubicka <hubicka@freesoft.cz>
Jan Hubicka <hubicka@freesoft.cz>
* i386.md (extendhisi2): Output mov instead of cw instruction for K6
to improve decoding bandwidth.
* i386.md (extendhiqi2): Likewise.
From-SVN: r26410
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 6 |
2 files changed, 10 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fec98330..6d5772c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +Tue Apr 13 14:29:58 1999 Jan Hubicka <hubicka@freesoft.cz> + + * i386.md (extendhisi2): Output mov instead of cw instruction for K6 + to improve decoding bandwidth. + * i386.md (extendhiqi2): Likewise. + Tue Apr 13 14:26:31 1999 Jan Hubicka <hubicka@freesoft.cz> * i386.md (movsf_push): Handle memory to memory case too, new splitter. diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 02256d4..93e50f2 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -2091,7 +2091,8 @@ "* { if (REGNO (operands[0]) == 0 - && REG_P (operands[1]) && REGNO (operands[1]) == 0) + && REG_P (operands[1]) && REGNO (operands[1]) == 0 + && (optimize_size || ix86_cpu != PROCESSOR_K6)) #ifdef INTEL_SYNTAX return \"cwde\"; #else @@ -2112,7 +2113,8 @@ "* { if (REGNO (operands[0]) == 0 - && REG_P (operands[1]) && REGNO (operands[1]) == 0) + && REG_P (operands[1]) && REGNO (operands[1]) == 0 + && (optimize_size || ix86_cpu != PROCESSOR_K6)) return \"cbtw\"; #ifdef INTEL_SYNTAX |