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| author | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2017-03-20 09:33:11 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2017-03-20 09:33:11 +0000 |
| commit | e325aba2a7c44778ab5233dcb4c9bd010837f2b7 (patch) | |
| tree | 847bd59b1f3c3df6fda4292ba44e72ac9fff3f69 /gcc/tree-chkp.c | |
| parent | a4dfaae1051ed23cea9aefaefdef156d0f02c1cd (diff) | |
| download | gcc-e325aba2a7c44778ab5233dcb4c9bd010837f2b7.zip gcc-e325aba2a7c44778ab5233dcb4c9bd010837f2b7.tar.gz gcc-e325aba2a7c44778ab5233dcb4c9bd010837f2b7.tar.bz2 | |
S/390: PR78857: Don't use load and test if result is live.
The FP load and test instruction should not be used for a comparison
if the target operand is being used afterwards. It unfortunately
turns SNaNs into QNaNs.
gcc/ChangeLog:
2017-03-20 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/78857
* config/s390/s390.md ("cmp<mode>_ccs_0"): Add a clobber of the
target operand. A new splitter adds the clobber statement in case
the target operand is dead anyway.
gcc/testsuite/ChangeLog:
2017-03-20 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/78857
* gcc.target/s390/load-and-test-fp-1.c: New test.
* gcc.target/s390/load-and-test-fp-2.c: New test.
From-SVN: r246274
Diffstat (limited to 'gcc/tree-chkp.c')
0 files changed, 0 insertions, 0 deletions