| %default {"suff":"d","nanval":"pos"} |
| /* |
| * Compare two floating-point values. Puts 0, 1, or -1 into the |
| * destination register based on the results of the comparison. |
| * |
| * int compare(x, y) { |
| * if (x == y) { |
| * return 0; |
| * } else if (x < y) { |
| * return -1; |
| * } else if (x > y) { |
| * return 1; |
| * } else { |
| * return nanval ? 1 : -1; |
| * } |
| * } |
| */ |
| /* op vAA, vBB, vCC */ |
| movzbl 3(rPC), %ecx # ecx<- CC |
| movzbl 2(rPC), %eax # eax<- BB |
| movs${suff} VREG_ADDRESS(%eax), %xmm0 |
| xor %eax, %eax |
| ucomis${suff} VREG_ADDRESS(%ecx), %xmm0 |
| jp .L${opcode}_nan_is_${nanval} |
| je .L${opcode}_finish |
| jb .L${opcode}_less |
| .L${opcode}_nan_is_pos: |
| incl %eax |
| jmp .L${opcode}_finish |
| .L${opcode}_nan_is_neg: |
| .L${opcode}_less: |
| decl %eax |
| .L${opcode}_finish: |
| SET_VREG %eax, rINST |
| ADVANCE_PC_FETCH_AND_GOTO_NEXT 2 |
