diff options
Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 28b0c78093a..e97a4570501 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -3625,6 +3625,18 @@ CONST0_RTX (V4SFmode), operands[1])); }) +;; It's more profitable to split and then extend in the same register. +(define_peephole2 + [(set (match_operand:DF 0 "register_operand") + (float_extend:DF + (match_operand:SF 1 "memory_operand")))] + "TARGET_SPLIT_MEM_OPND_FOR_FP_CONVERTS + && optimize_insn_for_speed_p () + && SSE_REG_P (operands[0])" + [(set (match_dup 2) (match_dup 1)) + (set (match_dup 0) (float_extend:DF (match_dup 2)))] + "operands[2] = gen_rtx_REG (SFmode, REGNO (operands[0]));") + (define_insn "*extendsfdf2_mixed" [(set (match_operand:DF 0 "nonimmediate_operand" "=f,m,x") (float_extend:DF @@ -3766,6 +3778,18 @@ CONST0_RTX (V2DFmode), operands[1])); }) +;; It's more profitable to split and then extend in the same register. +(define_peephole2 + [(set (match_operand:SF 0 "register_operand") + (float_truncate:SF + (match_operand:DF 1 "memory_operand")))] + "TARGET_SPLIT_MEM_OPND_FOR_FP_CONVERTS + && optimize_insn_for_speed_p () + && SSE_REG_P (operands[0])" + [(set (match_dup 2) (match_dup 1)) + (set (match_dup 0) (float_truncate:SF (match_dup 2)))] + "operands[2] = gen_rtx_REG (DFmode, REGNO (operands[0]));") + (define_expand "truncdfsf2_with_temp" [(parallel [(set (match_operand:SF 0) (float_truncate:SF (match_operand:DF 1))) @@ -16567,6 +16591,7 @@ "(TARGET_READ_MODIFY_WRITE || optimize_insn_for_size_p ()) && peep2_reg_dead_p (4, operands[0]) && !reg_overlap_mentioned_p (operands[0], operands[1]) + && !reg_overlap_mentioned_p (operands[0], operands[2]) && (<MODE>mode != QImode || immediate_operand (operands[2], QImode) || q_regs_operand (operands[2], QImode)) @@ -16631,6 +16656,7 @@ || immediate_operand (operands[2], SImode) || q_regs_operand (operands[2], SImode)) && !reg_overlap_mentioned_p (operands[0], operands[1]) + && !reg_overlap_mentioned_p (operands[0], operands[2]) && ix86_match_ccmode (peep2_next_insn (3), (GET_CODE (operands[3]) == PLUS || GET_CODE (operands[3]) == MINUS) |