1 # RUN: llc -march=hexagon -run-pass if-converter -o - %s -verify-machineinstrs | FileCheck %s 2 3 # The register r23 is live on the path bb.0->bb.2->bb.3. Make sure we add 4 # an implicit use of r23 to the predicated redefinition: 5 # CHECK: $r23 = A2_tfrt killed $p0, killed $r1, implicit killed $r23 6 7 # LivePhysRegs::addPristines could accidentally remove a callee-saved 8 # register, if it determined that it wasn't pristine. Doing that caused 9 # r23 in this testcase to be dropped from the Redefs set, and subsequently 10 # the necessary implicit use was not added for it. 11 12 --- 13 name: foo 14 tracksRegLiveness: true 15 fixedStack: 16 - { id: 0, offset: 0, size: 4, alignment: 4, callee-saved-register: '$r23' } 17 body: | 18 bb.0: 19 successors: %bb.1, %bb.2 20 liveins: $r0, $r1, $r23 21 $p0 = C2_cmpgti killed $r0, 0 22 J2_jumpf killed $p0, %bb.2, implicit-def $pc 23 24 bb.1: 25 successors: %bb.3 26 liveins: $r1 27 $r23 = A2_tfr killed $r1 28 J2_jump %bb.3, implicit-def $pc 29 30 bb.2: 31 successors: %bb.3 32 liveins: $r1, $r23 33 $r0 = A2_tfr $r1 34 35 bb.3: 36 liveins: $r23 37 ... 38
