[LLVMbugs] [Bug 20423] New: Integrated arm assembler doesn't understand vuzpq.u16

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Jul 23 17:16:32 PDT 2014


            Bug ID: 20423
           Summary: Integrated arm assembler doesn't understand vuzpq.u16
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: ARM
          Assignee: unassignedbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This works fine with gcc:

thakis at ubu:~$ arm-linux-gnueabihf-g++ -c test.cc  -mfpu=neon
thakis at ubu:~$ cat test.cc
void foo() {
    asm volatile ("vuzpq.u16  q0, q1\n\t" : : :);

But clang says:

 thakis$ ~/src/llvm-build/bin/clang -target arm-linux-androideabi  -c
-mfpu=neon test.cc 
<inline asm>:1:2: error: invalid instruction
        vuzpq.u16  q0, q1
1 error generated.

(this is used in skia)

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