[llvm-bugs] [Bug 39452] New: -pre-RA-sched=linearize: Bad machine code: Using an undefined physical register ($eflags)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39452

            Bug ID: 39452
           Summary: -pre-RA-sched=linearize: Bad machine code: Using an
                    undefined physical register ($eflags)
           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

*** Bad machine code: Using an undefined physical register ***
- function:    test1
- basic block: %bb.0  (0x7fd2c000e278)
- instruction: %60:gr64 = CMOVNE64rr %59:gr64(tied-def 0), %61:gr64, implicit
$eflags
- operand 3:   implicit $eflags

(16 times on all CMOV*64rr)

LLVM ERROR: Found 16 machine code errors.

build/bin/llc -verify-machineinstrs -mtriple=x86_64-- <
test/CodeGen/X86/scheduler-backtracking.ll -pre-RA-sched=linearize

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