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| author | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2020-11-07 01:09:07 +0100 |
|---|---|---|
| committer | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2020-11-07 12:08:31 +0100 |
| commit | 7ccaa8a6e88a02e05cb37adc2658071947e9331c (patch) | |
| tree | c7d272aee4287fe23fdf22da603e6fa2b124eb8e /validation | |
| parent | e58ddb5678f2fb1843c6871399509eacf9cc1371 (diff) | |
| download | sparse-dev-7ccaa8a6e88a02e05cb37adc2658071947e9331c.tar.gz | |
select: simplify SEL(SEL(x, C, 0), y, z) --> SEL(x, y, z) and its dual
If the condition of a select is also a select but with constant
operands, some simplification can be done:
* if the second operand is 0, the original condition can be used,
* idem if the first operand is 0s but the operand must be swapped.
Originally-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Diffstat (limited to 'validation')
| -rw-r--r-- | validation/optim/select-select-true-false0.c | 1 | ||||
| -rw-r--r-- | validation/optim/select-select-true-false1.c | 1 |
2 files changed, 0 insertions, 2 deletions
diff --git a/validation/optim/select-select-true-false0.c b/validation/optim/select-select-true-false0.c index 46bd7667..4066c2da 100644 --- a/validation/optim/select-select-true-false0.c +++ b/validation/optim/select-select-true-false0.c @@ -4,7 +4,6 @@ int bw(int p, int a, int b) { return ((p ? 0 : 42) ? a : b) == ( p ? b : a); } /* * check-name: select-select-true-false0 * check-command: test-linearize -Wno-decl $file - * check-known-to-fail * * check-output-ignore * check-output-returns: 1 diff --git a/validation/optim/select-select-true-false1.c b/validation/optim/select-select-true-false1.c index 00ffdcd1..32c0364d 100644 --- a/validation/optim/select-select-true-false1.c +++ b/validation/optim/select-select-true-false1.c @@ -7,7 +7,6 @@ int foo(int p) /* * check-name: select-select-true-false1 * check-command: test-linearize -Wno-decl $file - * check-known-to-fail * * check-output-ignore * check-output-returns: 1 |