1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
2 # RUN: llc -mtriple powerpc64le-unknown-linux-gnu -mcpu=pwr8 %s \
3 # RUN: -verify-coalescing --run-pass=register-coalescer -o - | FileCheck %s
5 # Check that the register coalescer correctly handles merging live ranges over
6 # SUBREG_TO_REG on PowerPC. The -verify-coalescing option will give an error if
12 tracksRegLiveness: true
17 ; CHECK-LABEL: name: check_subregs
20 ; CHECK-NEXT: [[COPY:%[0-9]+]]:g8rc_and_g8rc_nox0 = COPY $x3
21 ; CHECK-NEXT: [[LFSUX:%[0-9]+]]:f8rc, dead [[LFSUX1:%[0-9]+]]:g8rc_and_g8rc_nox0 = LFSUX [[COPY]], [[COPY]]
22 ; CHECK-NEXT: undef [[FRSP:%[0-9]+]].sub_64:vslrc = FRSP [[LFSUX]], implicit $rm
23 ; CHECK-NEXT: [[XVCVDPSP:%[0-9]+]]:vrrc = XVCVDPSP [[FRSP]], implicit $rm
24 ; CHECK-NEXT: $v2 = COPY [[XVCVDPSP]]
25 ; CHECK-NEXT: BLR8 implicit $lr8, implicit $rm, implicit $v2
26 %0:g8rc_and_g8rc_nox0 = COPY $x3
27 %1:f8rc, %2:g8rc_and_g8rc_nox0 = LFSUX %0, %0
28 %3:f4rc = FRSP killed %1, implicit $rm
29 %4:vslrc = SUBREG_TO_REG 1, %3, %subreg.sub_64
30 %5:vrrc = XVCVDPSP killed %4, implicit $rm
32 BLR8 implicit $lr8, implicit $rm, implicit $v2