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| author | Andrew Pinski <apinski@marvell.com> | 2023-08-31 16:17:35 -0700 |
|---|---|---|
| committer | Andrew Pinski <apinski@marvell.com> | 2023-09-05 14:14:54 -0700 |
| commit | e6bcf83989478348428c732c11e6c0f1719e9214 (patch) | |
| tree | 44a1984bbcaf5cc77e7837e22cf2049589e9fc80 /gcc/c | |
| parent | 244d1321340116b7780e78096356f69662fd0e18 (diff) | |
| download | gcc-e6bcf83989478348428c732c11e6c0f1719e9214.zip gcc-e6bcf83989478348428c732c11e6c0f1719e9214.tar.gz gcc-e6bcf83989478348428c732c11e6c0f1719e9214.tar.bz2 | |
MATCH: `(nop_convert)-(convert)a` into -(convert)a if we are converting from something smaller
This allows removal of one conversion and in the case of booleans, might be able to remove
the negate and the other conversion later on.
OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.
PR tree-optimization/107137
gcc/ChangeLog:
* match.pd (`(nop_convert)-(convert)a`): New pattern.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/neg-cast-2.c: New test.
* gcc.dg/tree-ssa/neg-cast-3.c: New test.
Diffstat (limited to 'gcc/c')
0 files changed, 0 insertions, 0 deletions