| # RUN: llc -march=hexagon -run-pass if-converter -o - %s -verify-machineinstrs | FileCheck %s |
| |
| # The register r23 is live on the path bb.0->bb.2->bb.3. Make sure we add |
| # an implicit use of r23 to the predicated redefinition: |
| # CHECK: $r23 = A2_tfrt killed $p0, killed $r1, implicit killed $r23 |
| |
| # LivePhysRegs::addPristines could accidentally remove a callee-saved |
| # register, if it determined that it wasn't pristine. Doing that caused |
| # r23 in this testcase to be dropped from the Redefs set, and subsequently |
| # the necessary implicit use was not added for it. |
| |
| --- |
| name: foo |
| tracksRegLiveness: true |
| fixedStack: |
| - { id: 0, offset: 0, size: 4, alignment: 4, callee-saved-register: '$r23' } |
| body: | |
| bb.0: |
| successors: %bb.1, %bb.2 |
| liveins: $r0, $r1, $r23 |
| $p0 = C2_cmpgti killed $r0, 0 |
| J2_jumpf killed $p0, %bb.2, implicit-def $pc |
| |
| bb.1: |
| successors: %bb.3 |
| liveins: $r1 |
| $r23 = A2_tfr killed $r1 |
| J2_jump %bb.3, implicit-def $pc |
| |
| bb.2: |
| successors: %bb.3 |
| liveins: $r1, $r23 |
| $r0 = A2_tfr $r1 |
| |
| bb.3: |
| liveins: $r23 |
| ... |
