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PPC: Compile math.sqrt() to fsqrt instruction.

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Mike Pall 2012-10-15 21:23:20 +02:00
parent 2621617a92
commit a58b86dad3
2 changed files with 5 additions and 1 deletions
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5
src/lj_asm_ppc.h
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@ -2026,7 +2026,10 @@ static void asm_ir(ASMState *as, IRIns *ir)
case IR_FPMATH: case IR_FPMATH:
if (ir->op2 == IRFPM_EXP2 && asm_fpjoin_pow(as, ir)) if (ir->op2 == IRFPM_EXP2 && asm_fpjoin_pow(as, ir))
break; break;
asm_callid(as, ir, IRCALL_lj_vm_floor + ir->op2); if (ir->op2 == IRFPM_SQRT && (as->flags & JIT_F_SQRT))
asm_fpunary(as, ir, PPCI_FSQRT);
else
asm_callid(as, ir, IRCALL_lj_vm_floor + ir->op2);
break; break;
/* Overflow-checking arithmetic ops. */ /* Overflow-checking arithmetic ops. */

1
src/lj_target_ppc.h
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@ -263,6 +263,7 @@ typedef enum PPCIns {
PPCI_FSUB = 0xfc000028, PPCI_FSUB = 0xfc000028,
PPCI_FMUL = 0xfc000032, PPCI_FMUL = 0xfc000032,
PPCI_FDIV = 0xfc000024, PPCI_FDIV = 0xfc000024,
PPCI_FSQRT = 0xfc00002c,
PPCI_FMADD = 0xfc00003a, PPCI_FMADD = 0xfc00003a,
PPCI_FMSUB = 0xfc000038, PPCI_FMSUB = 0xfc000038,