[llvm-bugs] [Bug 43699] New: [AMDGPU][GlobalISel] EXPENSIVE_CHECKS failures with inst-select-fabs.mir and inst-select-fneg.mir

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43699

            Bug ID: 43699
           Summary: [AMDGPU][GlobalISel] EXPENSIVE_CHECKS failures with
                    inst-select-fabs.mir and inst-select-fneg.mir
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: AMDGPU
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: llvm-bugs at lists.llvm.org, Matthew.Arsenault at amd.com

We're seeing intermittent test failure on the GlobalISel fneg/fabs tests:

C:\ps4-buildslave2\llvm-clang-x86_64-expensive-checks-win\llvm\test\CodeGen\AMDGPU\GlobalISel\inst-select-fabs.mir:222:9:
error: GCN: expected string not found in input

 ; GCN: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1

        ^

<stdin>:801:2: note: scanning from here

 %0:vreg_64(s64) = COPY $vgpr0_vgpr1

C:\ps4-buildslave2\llvm-clang-x86_64-expensive-checks-win\llvm\test\CodeGen\AMDGPU\GlobalISel\inst-select-fneg.mir:222:9:
error: GCN: expected string not found in input

 ; GCN: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1

        ^

<stdin>:861:2: note: scanning from here

 %0:vreg_64(s64) = COPY $vgpr0_vgpr1

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