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| author | Andreas Krebbel <krebbel@linux.ibm.com> | 2019-11-05 13:29:13 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2019-11-05 13:29:13 +0000 |
| commit | d9adca6e663070311c73cbd7dc9d73e7713aa315 (patch) | |
| tree | 7102426cb0ccd18ec5db324d670e62c7ad36c962 /gcc | |
| parent | d8e5ca292046561482b3aad266b1ac1558c9bd95 (diff) | |
| download | gcc-d9adca6e663070311c73cbd7dc9d73e7713aa315.zip gcc-d9adca6e663070311c73cbd7dc9d73e7713aa315.tar.gz gcc-d9adca6e663070311c73cbd7dc9d73e7713aa315.tar.bz2 | |
IBM Z: gen-vect-11/32: Set min-vect-loop-bound param back to default
In the Z backend we still set min-vect-loop-bound to 2 to work around
corner cases where awkward epilogue code gets generated in the
vectorizer. This has a particular bad impact when vectorizing loops
with a low iteration count. Due to this we do not vectorize the loop
in gen-vect-11/32 - what actually is a pity.
The patch sets min-vect-loop-bound back to the default value of 0 in
order to enable vectorization.
2019-11-05 Andreas Krebbel <krebbel@linux.ibm.com>
* gcc.dg/tree-ssa/gen-vect-11.c: Add --param min-vect-loop-bound=0
for IBM Z.
* gcc.dg/tree-ssa/gen-vect-23.c: Likewise.
From-SVN: r277831
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/gen-vect-11.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c | 4 |
3 files changed, 15 insertions, 1 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 2af8f73..b721e5d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,11 @@ 2019-11-05 Andreas Krebbel <krebbel@linux.ibm.com> + * gcc.dg/tree-ssa/gen-vect-11.c: Add --param min-vect-loop-bound=0 + for IBM Z. + * gcc.dg/tree-ssa/gen-vect-11.c: Likewise. + +2019-11-05 Andreas Krebbel <krebbel@linux.ibm.com> + * gcc.target/s390/s390.exp (check_effective_target_s390_useable_hw): Add inline asm for z14 and z15. Replace instruction for z13 with lochiz. Add register diff --git a/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-11.c b/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-11.c index 650e73a..dd1c0ac 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-11.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-11.c @@ -1,6 +1,10 @@ /* { dg-do run { target vect_cmdline_needed } } */ /* { dg-options "-O2 -ftree-vectorize -fwrapv -fdump-tree-vect-details -fvect-cost-model=dynamic" } */ -/* { dg-options "-O2 -ftree-vectorize -fwrapv -fdump-tree-vect-details -fvect-cost-model=dynamic -mno-sse" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-additional-options "-mno-sse" { target { i?86-*-* x86_64-*-* } } } */ +/* The IBM Z backend sets the min-vect-loop-bound param to 2 to avoid + awkward epilogue code generation in some cases. This line needs to + be removed after finding an alternate way to fix this. */ +/* { dg-additional-options "--param min-vect-loop-bound=0" { target { s390*-*-* } } } */ #include <stdlib.h> diff --git a/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c b/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c index c4bee19..378dd0b 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-32.c @@ -1,6 +1,10 @@ /* { dg-do run { target vect_cmdline_needed } } */ /* { dg-options "-O2 -fno-tree-loop-distribute-patterns -ftree-vectorize -fdump-tree-vect-details -fno-vect-cost-model" } */ /* { dg-additional-options "-mno-sse" { target { i?86-*-* x86_64-*-* } } } */ +/* The IBM Z backend sets the min-vect-loop-bound param to 2 to avoid + awkward epilogue code generation in some cases. This line needs to + be removed after finding an alternate way to fix this. */ +/* { dg-additional-options "--param min-vect-loop-bound=0" { target { s390*-*-* } } } */ #include <stdlib.h> |