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| author | Richard Biener <rguenther@suse.de> | 2023-08-04 11:24:49 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2023-08-04 12:16:00 +0200 |
| commit | 04aa0edcace22a7815cfc57575f1f7b1f166ac10 (patch) | |
| tree | ac6c2802b041b72eb25d191e7b488a4d72f37f5a /gcc/cp/method.cc | |
| parent | 2d2f090e67b26457596e7d5aabe629e3da58db94 (diff) | |
| download | gcc-04aa0edcace22a7815cfc57575f1f7b1f166ac10.zip gcc-04aa0edcace22a7815cfc57575f1f7b1f166ac10.tar.gz gcc-04aa0edcace22a7815cfc57575f1f7b1f166ac10.tar.bz2 | |
tree-optimization/110838 - less aggressively fold out-of-bound shifts
The following adjusts the shift simplification patterns to avoid
touching out-of-bound shift value arithmetic right shifts of
possibly negative values. While simplifying those to zero isn't
wrong it's violating the principle of least surprise.
PR tree-optimization/110838
* match.pd (([rl]shift @0 out-of-bounds) -> zero): Restrict
the arithmetic right-shift case to non-negative operands.
Diffstat (limited to 'gcc/cp/method.cc')
0 files changed, 0 insertions, 0 deletions