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* [Bug inline-asm/43860]  New: Inline asm doesn't respect q clobbers
@ 2010-04-22 23:18 lessen42+gcc at gmail dot com
  2010-04-22 23:21 ` [Bug inline-asm/43860] " pinskia at gcc dot gnu dot org
  0 siblings, 1 reply; 2+ messages in thread
From: lessen42+gcc at gmail dot com @ 2010-04-22 23:18 UTC (permalink / raw)
  To: gcc-bugs

Source:

void foo(float *a, float *b) {
    __asm__ volatile (
        "vld1.32 {d8[],d9[]}, [%1,:32] \n\t"
        "vst1.32 {q4},        [%0,:128] \n\t"
        :: "r"(a), "r"(b)
        : "q4"
    );
}

arm-none-linux-gnueabi-gcc-4.4.3 -O3 -mcpu=cortex-a8 -mfpu=neon
-mfloat-abi=softfp neonasm.c -S

foo:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        fstmfdd sp!, {d8}
#APP
@ 2 "neonasm.c" 1
        vld1.32 {d8[],d9[]}, [r1,:32] 
        vst1.32 {q4},        [r0,:128] 

@ 0 "" 2
        fldmfdd sp!, {d8}
        bx      lr


Both d8 and d9 should be saved, not just d8.


-- 
           Summary: Inline asm doesn't respect q clobbers
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: inline-asm
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lessen42+gcc at gmail dot com
 GCC build triplet: x86_64-apple-darwin
  GCC host triplet: x86_64-apple-darwin
GCC target triplet: arm-none-linux-gnueabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43860


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug inline-asm/43860] Inline asm doesn't respect q clobbers
  2010-04-22 23:18 [Bug inline-asm/43860] New: Inline asm doesn't respect q clobbers lessen42+gcc at gmail dot com
@ 2010-04-22 23:21 ` pinskia at gcc dot gnu dot org
  0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2010-04-22 23:21 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from pinskia at gcc dot gnu dot org  2010-04-22 23:21 -------


*** This bug has been marked as a duplicate of 43440 ***


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43860


^ permalink raw reply	[flat|nested] 2+ messages in thread
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2010-04-22 23:18 [Bug inline-asm/43860] New: Inline asm doesn't respect q clobbers lessen42+gcc at gmail dot com
2010-04-22 23:21 ` [Bug inline-asm/43860] " pinskia at gcc dot gnu dot org

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