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| author | glisse <glisse@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-04-21 09:32:32 +0000 |
|---|---|---|
| committer | glisse <glisse@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-04-21 09:32:32 +0000 |
| commit | 523f3a9d4fcbb5281bfd83c4010b22ce8aadad7b (patch) | |
| tree | 1ee36064cb859fba2a08608c049082bd1282c2cd /gcc/match.pd | |
| parent | fda1b8b5d86ce32cb429faeb2e1c27e13831d0a8 (diff) | |
| download | gcc-523f3a9d4fcbb5281bfd83c4010b22ce8aadad7b.tar.gz | |
max(INT_MIN, x) -> x
2016-04-21 Marc Glisse <marc.glisse@inria.fr>
gcc/
* match.pd (min(int_max, x), max(int_min, x)): New transformations.
gcc/testsuite/
* gcc.dg/tree-ssa/minmax-1.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@235323 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/match.pd')
| -rw-r--r-- | gcc/match.pd | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index 75aa6013b2e..38193216aee 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -1192,16 +1192,26 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) @1) (simplify (min @0 @1) - (if (INTEGRAL_TYPE_P (type) - && TYPE_MIN_VALUE (type) - && operand_equal_p (@1, TYPE_MIN_VALUE (type), OEP_ONLY_CONST)) - @1)) + (switch + (if (INTEGRAL_TYPE_P (type) + && TYPE_MIN_VALUE (type) + && operand_equal_p (@1, TYPE_MIN_VALUE (type), OEP_ONLY_CONST)) + @1) + (if (INTEGRAL_TYPE_P (type) + && TYPE_MAX_VALUE (type) + && operand_equal_p (@1, TYPE_MAX_VALUE (type), OEP_ONLY_CONST)) + @0))) (simplify (max @0 @1) - (if (INTEGRAL_TYPE_P (type) - && TYPE_MAX_VALUE (type) - && operand_equal_p (@1, TYPE_MAX_VALUE (type), OEP_ONLY_CONST)) - @1)) + (switch + (if (INTEGRAL_TYPE_P (type) + && TYPE_MAX_VALUE (type) + && operand_equal_p (@1, TYPE_MAX_VALUE (type), OEP_ONLY_CONST)) + @1) + (if (INTEGRAL_TYPE_P (type) + && TYPE_MIN_VALUE (type) + && operand_equal_p (@1, TYPE_MIN_VALUE (type), OEP_ONLY_CONST)) + @0))) (for minmax (FMIN FMAX) /* If either argument is NaN, return the other one. Avoid the transformation if we get (and honor) a signalling NaN. */ |