diff options
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/i386/i386.md | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 284b950..eea5d5d 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -8578,7 +8578,7 @@ (set_attr "mode" "SI")]) ;; Highpart multiplication peephole2s to tweak register allocation. -;; mov %rdx,imm; mov %rax,%rdi; imulq %rdx -> mov %rax,imm; imulq %rdi +;; mov imm,%rdx; mov %rdi,%rax; imulq %rdx -> mov imm,%rax; imulq %rdi (define_peephole2 [(set (match_operand:SWI48 0 "general_reg_operand") (match_operand:SWI48 1 "immediate_operand")) @@ -8588,7 +8588,8 @@ (any_mul_highpart:SWI48 (match_dup 2) (match_dup 0))) (clobber (match_dup 2)) (clobber (reg:CC FLAGS_REG))])] - "REGNO (operands[0]) != REGNO (operands[2]) + "REGNO (operands[3]) != AX_REG + && REGNO (operands[0]) != REGNO (operands[2]) && REGNO (operands[0]) != REGNO (operands[3]) && (REGNO (operands[0]) == REGNO (operands[4]) || peep2_reg_dead_p (3, operands[0]))" @@ -8608,7 +8609,10 @@ (any_mul_highpart:SI (match_dup 2) (match_dup 0)))) (clobber (match_dup 2)) (clobber (reg:CC FLAGS_REG))])] - "REGNO (operands[0]) != REGNO (operands[2]) + "TARGET_64BIT + && REGNO (operands[3]) != AX_REG + && REGNO (operands[0]) != REGNO (operands[2]) + && REGNO (operands[2]) != REGNO (operands[3]) && REGNO (operands[0]) != REGNO (operands[3]) && (REGNO (operands[0]) == REGNO (operands[4]) || peep2_reg_dead_p (3, operands[0]))" |