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GNU C Library master sources branch master updated. glibc-2.23-155-gec0cac9
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 5 Apr 2016 12:21:46 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.23-155-gec0cac9
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=ec0cac9a1f4094bd0db6f77c1b329e7a40eecc10
commit ec0cac9a1f4094bd0db6f77c1b329e7a40eecc10
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Apr 5 05:21:07 2016 -0700
Force 32-bit displacement in memset-vec-unaligned-erms.S
* sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S: Force
32-bit displacement to avoid long nop between instructions.
diff --git a/ChangeLog b/ChangeLog
index 4b2f408..048299a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2016-04-05 H.J. Lu <hongjiu.lu@intel.com>
+ * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S: Force
+ 32-bit displacement to avoid long nop between instructions.
+
+2016-04-05 H.J. Lu <hongjiu.lu@intel.com>
+
* sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S: Add
a comment on VMOVU and VMOVA.
diff --git a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
index 9383517..fe0f745 100644
--- a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
+++ b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
@@ -159,10 +159,23 @@ L(return):
.p2align 4
L(loop_start):
leaq (VEC_SIZE * 4)(%rdi), %rcx
+# if VEC_SIZE == 32 || VEC_SIZE == 64
+ /* Force 32-bit displacement to avoid long nop between
+ instructions. */
+ VMOVU.d32 %VEC(0), (%rdi)
+# else
VMOVU %VEC(0), (%rdi)
+# endif
andq $-(VEC_SIZE * 4), %rcx
+# if VEC_SIZE == 32
+ /* Force 32-bit displacement to avoid long nop between
+ instructions. */
+ VMOVU.d32 %VEC(0), -VEC_SIZE(%rdi,%rdx)
+ VMOVU.d32 %VEC(0), VEC_SIZE(%rdi)
+# else
VMOVU %VEC(0), -VEC_SIZE(%rdi,%rdx)
VMOVU %VEC(0), VEC_SIZE(%rdi)
+# endif
VMOVU %VEC(0), -(VEC_SIZE * 2)(%rdi,%rdx)
VMOVU %VEC(0), (VEC_SIZE * 2)(%rdi)
VMOVU %VEC(0), -(VEC_SIZE * 3)(%rdi,%rdx)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
.../x86_64/multiarch/memset-vec-unaligned-erms.S | 13 +++++++++++++
2 files changed, 18 insertions(+), 0 deletions(-)
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