[llvm-bugs] [Bug 39481] New: Bad machine code: Multiple connected components in live interval

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39481

            Bug ID: 39481
           Summary: Bad machine code: Multiple connected components in
                    live interval
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: francisvm at yahoo.com
                CC: llvm-bugs at lists.llvm.org

build/bin/llc -verify-machineinstrs -mtriple=x86_64-linux-gnu -start-before
greedy -stop-after virtregrewriter -o -
test/DebugInfo/X86/live-debug-vars-discard-invalid.mir

*** Bad machine code: Multiple connected components in live interval ***
- function:    foobar
- interval:    %0
[16r,16d:5)[144r,144d:4)[160r,160d:3)[176r,176d:2)[192r,192d:1)[224r,224d:0) 
0 at 224r 1 at 192r 2 at 176r 3 at 160r 4 at 144r 5 at 16r weight:INF
0: valnos 0
1: valnos 1
2: valnos 2
3: valnos 3
4: valnos 4
5: valnos 5

*** Bad machine code: Multiple connected components in live interval ***
- function:    foobar
- interval:    %2 [64r,64d:3)[80r,80d:2)[96r,96d:1)[112r,112d:0)  0 at 112r 1 at 96r
2 at 80r 3 at 64r weight:INF
0: valnos 0
1: valnos 1
2: valnos 2
3: valnos 3
LLVM ERROR: Found 2 machine code errors.

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