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| author | Jakub Jelinek <jakub@redhat.com> | 2012-04-25 21:40:31 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-04-25 21:40:31 +0200 |
| commit | c1d40097cbfefceed04bbb3d3c9e14dcf7b27403 (patch) | |
| tree | d914897361013a3a4fbb4d54ab0e5282746ff053 /gcc | |
| parent | ff5f00c3a14ee1c74acce362af4aa879a39f50fb (diff) | |
| download | gcc-c1d40097cbfefceed04bbb3d3c9e14dcf7b27403.zip gcc-c1d40097cbfefceed04bbb3d3c9e14dcf7b27403.tar.gz gcc-c1d40097cbfefceed04bbb3d3c9e14dcf7b27403.tar.bz2 | |
re PR target/53110 (GCC-4.7 generates stupid x86_64 asm)
PR target/53110
* config/i386/i386.md (and<mode>3): For andq $0xffffffff, reg
instead expand it as zero extension.
From-SVN: r186839
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 12 |
2 files changed, 17 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 820ba1b..a93d3cd 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-04-25 Jakub Jelinek <jakub@redhat.com> + + PR target/53110 + * config/i386/i386.md (and<mode>3): For andq $0xffffffff, reg + instead expand it as zero extension. + 2012-04-25 H.J. Lu <hongjiu.lu@intel.com> PR debug/52857 diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 0b2fe55..60439f9 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -7694,7 +7694,17 @@ (and:SWIM (match_operand:SWIM 1 "nonimmediate_operand") (match_operand:SWIM 2 "<general_szext_operand>")))] "" - "ix86_expand_binary_operator (AND, <MODE>mode, operands); DONE;") +{ + if (<MODE>mode == DImode + && GET_CODE (operands[2]) == CONST_INT + && INTVAL (operands[2]) == (HOST_WIDE_INT) 0xffffffff + && REG_P (operands[1])) + emit_insn (gen_zero_extendsidi2 (operands[0], + gen_lowpart (SImode, operands[1]))); + else + ix86_expand_binary_operator (AND, <MODE>mode, operands); + DONE; +}) (define_insn "*anddi_1" [(set (match_operand:DI 0 "nonimmediate_operand" "=r,rm,r,r") |