[llvm-bugs] [Bug 27250] New: aarch64 inline assembly adds number as "#24" instead of plain "24" in the context of .set

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Apr 6 14:33:06 PDT 2016


https://llvm.org/bugs/show_bug.cgi?id=27250

            Bug ID: 27250
           Summary: aarch64 inline assembly adds number as "#24" instead
                    of plain "24" in the context of .set
           Product: clang
           Version: 3.8
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: bero at linaro.org
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

This piece of inline assembly (extracted from the Linux kernel):

asm(".globl test; .set test, %0" :: "I"(24));

generates working code in gcc:

.globl test; .set test, 24

but clang generates invalid code:

.globl test; .set test, #24

Probably gcc checks for .set and friends before emitting the #.

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