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(parent: 606791f) | patch
re PR tree-optimization/23452 (Optimizing CONJG_EXPR (a) * a)
authorRoger Sayle <roger@eyesopen.com>
Tue, 30 May 2006 21:34:04 +0000 (21:34 +0000)
committerRoger Sayle <sayle@gcc.gnu.org>
Tue, 30 May 2006 21:34:04 +0000 (21:34 +0000)
commit99b25753bb82141b1f9b9a8eb62e14d6237c7a23
treee8c7d9474db25736fdee60d42de43372bd6ae36etree | snapshot
parent606791f69894426ecd59d7baf18664fb77138324commit | diff
re PR tree-optimization/23452 (Optimizing CONJG_EXPR (a) * a)

PR tree-optimization/23452
* fold-const.c (fold_mult_zconjz): New subroutine of fold_binary,
to optimize z * conj(z) as realpart(z)^2 + imagpart(z)^2.
(fold_binary) <MULT_EXPR>: Call fold_mult_zconjz for integral
complex values and with -ffast-math for FP complex values.

* gcc.dg/fold-mulconj-1.c: New test case.

From-SVN: r114246
gcc/ChangeLog diff | blob | history
gcc/fold-const.c diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/gcc.dg/fold-mulconj-1.c [new file with mode: 0644] blob
Domain: System / Toolchain;