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| author | Andrew Pinski <quic_apinski@quicinc.com> | 2024-06-30 18:39:07 -0700 |
|---|---|---|
| committer | Andrew Pinski <quic_apinski@quicinc.com> | 2024-07-02 14:26:51 -0700 |
| commit | 578ccc717937178b50db0e35554da3f77f19e304 (patch) | |
| tree | 8b944e745c72f8d53a4e4c3518f3484ede8f93b8 /gcc/tree-pass.h | |
| parent | 1250540a98e0a1dfa4d7834672d88d8543ea70b1 (diff) | |
| download | gcc-578ccc717937178b50db0e35554da3f77f19e304.zip gcc-578ccc717937178b50db0e35554da3f77f19e304.tar.gz gcc-578ccc717937178b50db0e35554da3f77f19e304.tar.bz2 | |
Small optimization for complex addition, real/imag parts the same
This is just a small optimization for the case where the real and imag
parts are the same when lowering complex addition/subtraction. We only
need to do the addition once when the real and imag parts are the same (on
both sides of the operator). This gets done later on by FRE/PRE/DOM but
having it done soon allows the cabs lowering to remove the sqrt and
just change it to a multiply by a constant.
Bootstrapped and tested on x86_64-linux-gnu.
gcc/ChangeLog:
* tree-complex.cc (expand_complex_addition): If both
operands have the same real and imag parts, only
add the addition once.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/complex-8.c: New test.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Diffstat (limited to 'gcc/tree-pass.h')
0 files changed, 0 insertions, 0 deletions