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* [gcc(refs/users/meissner/heads/dmf004)] Don't do load/store vector with length if overlap.
@ 2022-11-16  8:28 Michael Meissner
  0 siblings, 0 replies; 2+ messages in thread
From: Michael Meissner @ 2022-11-16  8:28 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:cc045071b71691506e598fd39969e18dd05cc6f5

commit cc045071b71691506e598fd39969e18dd05cc6f5
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Wed Nov 16 03:28:12 2022 -0500

    Don't do load/store vector with length if overlap.
    
    2022-11-16   Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/
    
            * config/rs6000/rs6000-string.cc (expand_block_move): Don't do the
            optimization to use load/store vector with length if the source and
            destination might overlap.

Diff:
---
 gcc/config/rs6000/rs6000-string.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/rs6000/rs6000-string.cc b/gcc/config/rs6000/rs6000-string.cc
index 6e1e51c15fb..038f194c32c 100644
--- a/gcc/config/rs6000/rs6000-string.cc
+++ b/gcc/config/rs6000/rs6000-string.cc
@@ -2838,7 +2838,7 @@ expand_block_move (rtx operands[], bool might_overlap)
       if (TARGET_BLOCK_OPS_UNALIGNED_VSX && TARGET_P9_VECTOR && TARGET_64BIT
 	  && rs6000_memcpy_inline_bytes > 0
 	  && rs6000_memcpy_inline_bytes <= 255
-	  && optimize && !optimize_size)
+	  && !might_overlap && optimize && !optimize_size)
 	{
 	  expand_block_move_variable (orig_dest, orig_src, bytes_rtx);
 	  return 1;

^ permalink raw reply	[flat|nested] 2+ messages in thread
* [gcc(refs/users/meissner/heads/dmf004)] Don't do load/store vector with length if overlap.
@ 2022-11-17 21:55 Michael Meissner
  0 siblings, 0 replies; 2+ messages in thread
From: Michael Meissner @ 2022-11-17 21:55 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:06d852660c1400211cee38507fb4796e462ca914

commit 06d852660c1400211cee38507fb4796e462ca914
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Wed Nov 16 03:28:12 2022 -0500

    Don't do load/store vector with length if overlap.
    
    2022-11-16   Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/
    
            * config/rs6000/rs6000-string.cc (expand_block_move): Don't do the
            optimization to use load/store vector with length if the source and
            destination might overlap.

Diff:
---
 gcc/config/rs6000/rs6000-string.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/rs6000/rs6000-string.cc b/gcc/config/rs6000/rs6000-string.cc
index 6e1e51c15fb..038f194c32c 100644
--- a/gcc/config/rs6000/rs6000-string.cc
+++ b/gcc/config/rs6000/rs6000-string.cc
@@ -2838,7 +2838,7 @@ expand_block_move (rtx operands[], bool might_overlap)
       if (TARGET_BLOCK_OPS_UNALIGNED_VSX && TARGET_P9_VECTOR && TARGET_64BIT
 	  && rs6000_memcpy_inline_bytes > 0
 	  && rs6000_memcpy_inline_bytes <= 255
-	  && optimize && !optimize_size)
+	  && !might_overlap && optimize && !optimize_size)
 	{
 	  expand_block_move_variable (orig_dest, orig_src, bytes_rtx);
 	  return 1;

^ permalink raw reply	[flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-11-17 21:55 UTC | newest]

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