| # RUN: llc -march=hexagon -run-pass expand-condsets -o - %s -verify-machineinstrs | FileCheck %s |
| |
| # CHECK-LABEL: name: fred |
| |
| # Make sure that <def,read-undef> is accounted for when validating moves |
| # during predication. In the code below, %2.isub_hi is invalidated |
| # by the C2_mux instruction, and so predicating the A2_addi as an argument |
| # to the C2_muxir should not happen. |
| |
| --- | |
| define void @fred() { ret void } |
| |
| ... |
| --- |
| |
| name: fred |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: predregs } |
| - { id: 1, class: intregs } |
| - { id: 2, class: doubleregs } |
| - { id: 3, class: intregs } |
| liveins: |
| - { reg: '$p0', virtual-reg: '%0' } |
| - { reg: '$r0', virtual-reg: '%1' } |
| - { reg: '$d0', virtual-reg: '%2' } |
| |
| body: | |
| bb.0: |
| liveins: $r0, $d0, $p0 |
| %0 = COPY $p0 |
| %1 = COPY $r0 |
| %2 = COPY $d0 |
| ; Check that this instruction is unchanged (remains unpredicated) |
| ; CHECK: %3:intregs = A2_addi %2.isub_hi, 1 |
| %3 = A2_addi %2.isub_hi, 1 |
| undef %2.isub_lo = C2_mux %0, %2.isub_lo, %1 |
| %2.isub_hi = C2_muxir %0, %3, 0 |
| |
| ... |
