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| author | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2023-05-16 08:34:28 +0200 |
|---|---|---|
| committer | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2023-05-16 08:34:28 +0200 |
| commit | c4dbea65b2777735551727d56f59a26f8ce2de0a (patch) | |
| tree | 4787df305a714b97b1f6a8e6434e1a22801ad198 /gcc/testsuite/gcc.target | |
| parent | 5154171e1f3aa4aa120cee3ecf0347cd72a427fb (diff) | |
| download | gcc-c4dbea65b2777735551727d56f59a26f8ce2de0a.tar.gz | |
s390: Refactor block operation setmem
Vectorize memset with a constant length of less than or equal to 64
bytes.
Do not perform a libc function call into memset in case the size is not
a compile-time constant but bounded and the upper bound is less than or
equal to 256 bytes.
gcc/ChangeLog:
* config/s390/s390-protos.h (s390_expand_setmem): Change
function signature.
* config/s390/s390.cc (s390_expand_setmem): For memset's less
than or equal to 256 byte do not perform a libc call.
* config/s390/s390.md: Change expander into a version which
takes 8 operands.
gcc/testsuite/ChangeLog:
* gcc.target/s390/memset-1.c: Test case memset1 makes use of
vst, now.
Diffstat (limited to 'gcc/testsuite/gcc.target')
| -rw-r--r-- | gcc/testsuite/gcc.target/s390/memset-1.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/testsuite/gcc.target/s390/memset-1.c b/gcc/testsuite/gcc.target/s390/memset-1.c index 9463a77208b..5eb96112f13 100644 --- a/gcc/testsuite/gcc.target/s390/memset-1.c +++ b/gcc/testsuite/gcc.target/s390/memset-1.c @@ -11,7 +11,7 @@ void return __builtin_memset (s, c, 1); } -/* 1 stc 1 mvc */ +/* 3 vst */ void *memset1(void *s, int c) { @@ -170,8 +170,9 @@ void } /* { dg-final { scan-assembler-times "mvi\\s" 1 } } */ -/* { dg-final { scan-assembler-times "mvc\\s" 20 } } */ +/* { dg-final { scan-assembler-times "mvc\\s" 19 } } */ /* { dg-final { scan-assembler-times "xc\\s" 28 } } */ -/* { dg-final { scan-assembler-times "stc\\s" 22 } } */ +/* { dg-final { scan-assembler-times "stc\\s" 21 } } */ /* { dg-final { scan-assembler-times "stcy\\s" 0 } } */ /* { dg-final { scan-assembler-times "pfd\\s" 2 } } */ +/* { dg-final { scan-assembler-times "vst\\s" 3 } } */ |