91 lines · plain
1# RUN: llc -mtriple=amdgcn-- -run-pass=print-machine-uniformity -o - %s 2>&1 | FileCheck %s2# RUN: llc -mtriple=amdgcn-- -passes='print<machine-uniformity>' -filetype=null %s 2>&1 | FileCheck %s3 4# bb0(div)5# / \6# bb1 <-> bb27# |8# bb39# CHECK-LABEL: MachineUniformityInfo for function: @cycle_diverge_enter10# CHECK-NEXT: CYCLES ASSUMED DIVERGENT:11# CHECK-NEXT: depth=1: entries(bb.2 bb.1)12# CHECK-NEXT: CYCLES WITH DIVERGENT EXIT:13# CHECK-NEXT: depth=1: entries(bb.2 bb.1)14---15name: cycle_diverge_enter16tracksRegLiveness: true17body: |18 bb.0:19 successors: %bb.1, %bb.220 21 %0:_(s32) = G_IMPLICIT_DEF22 %1:_(s32) = G_CONSTANT i32 023 %2:_(s32) = G_IMPLICIT_DEF24 %3:_(s32) = G_CONSTANT i32 125 %4:_(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.workitem.id.x)26 %6:_(s1) = G_ICMP intpred(slt), %4(s32), %1 ; DIVERGENT CONDITION27 %7:_(s1) = G_ICMP intpred(slt), %2(s32), %1 ; UNIFORM CONDITION28 G_BRCOND %6(s1), %bb.1 ; divergent branch29 G_BR %bb.230 bb.1:31 successors: %bb.232 33 %8:_(s32) = G_PHI %1(s32), %bb.0, %0(s32), %bb.234 G_BR %bb.235 bb.2:36 successors: %bb.1, %bb.337 38 %9:_(s32) = G_PHI %2(s32), %bb.1, %3(s32), %bb.039 %10:_(s1) = G_ICMP intpred(eq), %9(s32), %1(s32)40 G_BRCOND %10(s1), %bb.3 ; divergent branch41 G_BR %bb.142 43 bb.3:44 %11:_(s32), %12:_(s1) = G_UADDO %9, %345 S_ENDPGM 046 47...48 49 50# CHECK-LABEL: MachineUniformityInfo for function: @cycle_diverge_exit51# CHECK: DIVERGENT: %{{[0-9]*}}: %{{[0-9]*}}:_(s32), %{{[0-9]*}}:_(s1) = G_UADDO %8:_, %{{[0-9]*}}:_52# bb053# / \54# bb1 <-> bb2(div)55# |56# bb357---58name: cycle_diverge_exit59tracksRegLiveness: true60body: |61 bb.0:62 successors: %bb.1, %bb.263 64 %0:_(s32) = G_IMPLICIT_DEF65 %1:_(s32) = G_CONSTANT i32 066 %2:_(s32) = G_IMPLICIT_DEF67 %3:_(s32) = G_CONSTANT i32 168 %4:_(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.workitem.id.x)69 %6:_(s1) = G_ICMP intpred(slt), %4(s32), %1 ; DIVERGENT CONDITION70 %7:_(s1) = G_ICMP intpred(slt), %2(s32), %1 ; UNIFORM CONDITION71 G_BRCOND %7(s1), %bb.1 ; uniform branch72 G_BR %bb.273 bb.1:74 successors: %bb.275 76 %8:_(s32) = G_PHI %1(s32), %bb.0, %0(s32), %bb.277 G_BR %bb.278 bb.2:79 successors: %bb.1, %bb.380 81 %9:_(s32) = G_PHI %2(s32), %bb.1, %3(s32), %bb.082 %10:_(s1) = G_ICMP intpred(sgt), %9(s32), %1(s32)83 G_BRCOND %6(s1), %bb.3 ; divergent branch84 G_BR %bb.185 86 bb.3:87 %11:_(s32), %12:_(s1) = G_UADDO %9, %388 S_ENDPGM 089 90...91