| # RUN: not --crash llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -verify-machineinstrs -run-pass=machine-scheduler -verify-misched -o /dev/null %s 2>&1 | FileCheck %s |
| |
| # CHECK: *** Bad machine code: No live subrange at use *** |
| # CHECK-NEXT: - function: at_least_one_value_should_be_defined_by_this_mask |
| # CHECK-NEXT: - basic block: %bb.0 |
| # CHECK-NEXT: - instruction: 48B dead undef %2.sub0:vreg_128 = COPY %0.sub0:vreg_128 |
| # CHECK-NEXT: - operand 1: %0.sub0:vreg_128 |
| # CHECK-NEXT: - interval: %0 [16r,48r:0) 0@16r L000000000000000C [16r,32r:0) 0@16r weight:0.000000e+00 |
| |
| # This used to assert with: !SR.empty() && "At least one value should be defined by this mask" |
| |
| # This MIR is invalid and should be caught by the verifier. %0.sub0 is |
| # used, but not defined. There are also lanes in %0 that are not used |
| # or defined anywhere. Previously there was an assertion in the |
| # LiveInterval computation, which was more confusing. The invalid |
| # LiveRange should be produced and the verifier will catch it. |
| |
| --- |
| name: at_least_one_value_should_be_defined_by_this_mask |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| |
| undef %0.sub1:vreg_128 = V_MOV_B32_e32 0, implicit $exec |
| %1:vreg_128 = COPY %0 |
| undef %2.sub0:vreg_128 = COPY %0.sub0 |
| |
| ... |
