| # RUN: llc -march=hexagon -run-pass unreachable-mbb-elimination %s -o - | FileCheck %s | |
| --- | |
| name: fred | |
| tracksRegLiveness: true | |
| body: | | |
| bb.0: | |
| liveins: %d0 | |
| successors: %bb.2 | |
| %0 : doubleregs = COPY %d0 | |
| J2_jump %bb.2, implicit-def %pc | |
| bb.1: | |
| successors: %bb.2 | |
| A2_nop | |
| bb.2: | |
| ; Make sure that the subregister from the PHI operand is preserved. | |
| ; CHECK: %[[REG:[0-9]+]]:intregs = COPY %0.isub_lo | |
| ; CHECK: %r0 = COPY %[[REG]] | |
| %1 : intregs = PHI %0.isub_lo, %bb.0, %0.isub_hi, %bb.1 | |
| %r0 = COPY %1 | |
| ... |