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PR missed-optimization/77881
authormatz <matz@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 15 Nov 2016 14:02:28 +0000 (14:02 +0000)
committermatz <matz@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 15 Nov 2016 14:02:28 +0000 (14:02 +0000)
commit385999e27cfb6ce87416b893d1409adc7b88007a
tree6332e06f8a024d08d976fc3a4dcd33711ea2e615tree | snapshot
parent53ae7f64489ee9007a24e0a2fcb019915546d8a3commit | diff
PR missed-optimization/77881
* combine.c (simplify_comparison): Remove useless subregs
also inside the loop, not just after it.
(make_compound_operation): Recognize some subregs as being
masking as well.

testsuite/
* gcc.target/i386/pr77881.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242414 138bc75d-0d04-0410-961f-82ee72b054a4
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gcc/combine.c diff | blob | blame | history
gcc/testsuite/ChangeLog diff | blob | blame | history
gcc/testsuite/gcc.target/i386/pr77881.c [new file with mode: 0644] blob
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