| commit | 837679bc2df5f04edeab96c8f494c7cbdfe67c9f | |
| author | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Mon, 6 Jun 2016 16:06:05 +0000 (6 16:06 +0000) | ||
| committer | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Mon, 6 Jun 2016 16:06:05 +0000 (6 16:06 +0000) | ||
| tree | bcfb07a9b834a240baa5c8658d3bcc74e6499f2b | treesnapshot (tar.gz zip) |
| parent | 93377bfd47faf5b7e869ecf142d952a67f6963ef | commitdiff |
[3/3][RTL ifcvt] PR middle-end/37780: Conditional expression with __builtin_clz() should be optimized out
PR middle-end/37780
* ifcvt.c (noce_try_ifelse_collapse): New function.
Declare prototype.
(noce_process_if_block): Call noce_try_ifelse_collapse.
* simplify-rtx.c (simplify_cond_clz_ctz): New function.
(simplify_ternary_operation): Use the above to simplify
conditional CLZ/CTZ expressions.
* gcc.c-torture/execute/pr37780.c: New test.
* gcc.target/aarch64/pr37780_1.c: Likewise.
* gcc.target/arm/pr37780_1.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237141 138bc75d-0d04-0410-961f-82ee72b054a4
PR middle-end/37780
* ifcvt.c (noce_try_ifelse_collapse): New function.
Declare prototype.
(noce_process_if_block): Call noce_try_ifelse_collapse.
* simplify-rtx.c (simplify_cond_clz_ctz): New function.
(simplify_ternary_operation): Use the above to simplify
conditional CLZ/CTZ expressions.
* gcc.c-torture/execute/pr37780.c: New test.
* gcc.target/aarch64/pr37780_1.c: Likewise.
* gcc.target/arm/pr37780_1.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@237141 138bc75d-0d04-0410-961f-82ee72b054a4
| gcc/ChangeLog | diffblobblamehistory | |
| gcc/ifcvt.c | diffblobblamehistory | |
| gcc/simplify-rtx.c | diffblobblamehistory | |
| gcc/testsuite/ChangeLog | diffblobblamehistory | |
| gcc/testsuite/gcc.c-torture/execute/pr37780.c | [new file with mode: 0644] | blob |
| gcc/testsuite/gcc.target/aarch64/pr37780_1.c | [new file with mode: 0644] | blob |
| gcc/testsuite/gcc.target/arm/pr37780_1.c | [new file with mode: 0644] | blob |