diff options
| author | Richard Biener <rguenther@suse.de> | 2018-11-08 08:03:12 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-11-08 08:03:12 +0000 |
| commit | 85eaf6c6a3678d7eb19552a8a6f58018e6892115 (patch) | |
| tree | 2f0c0aea397f54e0dbf30d9a6eb61dbb6c78dd07 /gcc/testsuite | |
| parent | ab6813850d0a51f90f57a0e4da470cb0b5c5b1f3 (diff) | |
re PR target/87913 (max(n, 1) code generation)
2018-11-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/87913
* tree-ssa-phiopt.c (minmax_replacement): Turn EQ/NE compares
of extreme values to ordered comparisons.
* gcc.dg/tree-ssa/phi-opt-20.c: New testcase.
From-SVN: r265909
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/phi-opt-20.c | 25 |
2 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e719c314bcd..5edc17e1c37 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-11-08 Richard Biener <rguenther@suse.de> + + PR tree-optimization/87913 + * gcc.dg/tree-ssa/phi-opt-20.c: New testcase. + 2018-11-08 Chenghua Xu <paul.hua.gm@gmail.com> * gcc.target/mips/mips.exp (mips-dg-options): diff --git a/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-20.c b/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-20.c new file mode 100644 index 00000000000..c310308e3a6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/phi-opt-20.c @@ -0,0 +1,25 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-phiopt1" } */ + +unsigned int f(unsigned int num) +{ + return num < 1 ? 1 : num; +} + +unsigned int g(unsigned int num) +{ + return num > (unsigned)__INT_MAX__ * 2 ? (unsigned)__INT_MAX__ * 2 : num; +} + +int h(int num) +{ + return num < -__INT_MAX__ ? -__INT_MAX__ : num; +} + +int i(int num) +{ + return num > __INT_MAX__-1 ? __INT_MAX__-1 : num; +} + +/* { dg-final { scan-tree-dump-times "MAX_EXPR" 2 "phiopt1" } } */ +/* { dg-final { scan-tree-dump-times "MIN_EXPR" 2 "phiopt1" } } */ |