1 # RUN: llc -mtriple=x86_64-- -run-pass=peephole-opt %s -o - | FileCheck %s 2 --- | 3 define void @func() { ret void } 4 ... 5 --- 6 # Check that instructions with MI.isBitcast() are only replaced by COPY if there 7 # are no SUBREG_TO_REG users. 8 # CHECK-LABEL: name: func 9 name: func 10 registers: 11 - { id: 0, class: gr32 } 12 - { id: 1, class: fr32 } 13 - { id: 2, class: gr32 } 14 15 - { id: 3, class: gr32 } 16 - { id: 4, class: fr32 } 17 - { id: 5, class: gr32 } 18 - { id: 6, class: gr64 } 19 20 body: | 21 bb.0: 22 ; CHECK: %1:fr32 = VMOVDI2SSrr %0 23 ; CHECK: %7:gr32 = COPY %0 24 ; CHECK: NOOP implicit %7 25 %0 = MOV32ri 42 26 %1 = VMOVDI2SSrr %0 27 %2 = MOVSS2DIrr %1 28 NOOP implicit %2 29 30 ; CHECK: %4:fr32 = VMOVDI2SSrr %3 31 ; CHECK-NOT: COPY 32 ; CHECK: %5:gr32 = MOVSS2DIrr %4 33 ; CHECK: %6:gr64 = SUBREG_TO_REG %5, 0 34 ; CHECK: NOOP implicit %6 35 %3 = MOV32ri 42 36 %4 = VMOVDI2SSrr %3 37 %5 = MOVSS2DIrr %4 38 %6 = SUBREG_TO_REG %5, 0, %subreg.sub_32bit 39 NOOP implicit %6 40 ... 41
