Bug ID: 30714
           Summary: [MIPS] Emitted instructions do not meet their
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
    Classification: Unclassified

Certain instructions can be emitted in cases where they do not meet their

See: and

Quoting D25622:

The following tests fail when this patch is applied.
Failing Tests (26):

LLVM :: CodeGen/Mips/cconv/callee-saved-float.ll
LLVM :: CodeGen/Mips/micromips-atomic1.ll
LLVM :: CodeGen/Mips/tailcall/tailcall-wrong-isa.ll
LLVM :: MC/Mips/cprestore-noreorder.s
LLVM :: MC/Mips/cprestore-reorder.s
LLVM :: MC/Mips/elf_eflags_mips16.s
LLVM :: MC/Mips/expansion-jal-sym-pic.s
LLVM :: MC/Mips/expr1.s
LLVM :: MC/Mips/micromips-16-bit-instructions.s
LLVM :: MC/Mips/micromips-alu-instructions.s
LLVM :: MC/Mips/micromips-branch-fixup.s
LLVM :: MC/Mips/micromips-branch-instructions.s
LLVM :: MC/Mips/micromips-control-instructions.s
LLVM :: MC/Mips/micromips-dsp/valid-micromips32r3.s
LLVM :: MC/Mips/micromips-el-fixup-data.s
LLVM :: MC/Mips/micromips-expansions.s
LLVM :: MC/Mips/micromips-fpu-instructions.s
LLVM :: MC/Mips/micromips-jump-instructions.s
LLVM :: MC/Mips/micromips-jump26.s
LLVM :: MC/Mips/micromips-tailr.s
LLVM :: MC/Mips/micromips/valid.s
LLVM :: MC/Mips/micromips32r6/valid.s
LLVM :: MC/Mips/mips2/valid.s
LLVM :: MC/Mips/mips3/valid.s
LLVM :: MC/Mips/mips4/valid.s
LLVM :: MC/Mips/mips5/valid.s

Some look like bugs but others look like they are deliberate (e.g.
SYNC is using a loophole to implement the MIPS-II version as an
alias of the MIPS32 version).

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