diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-53.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-53.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-53.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-53.c new file mode 100644 index 0000000..a2df591 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-53.c @@ -0,0 +1,26 @@ +/* { dg-options "-O2 -fno-strict-aliasing -fdump-tree-dse-details -fno-tree-fre -fdump-tree-optimized" } */ + +/* PR tree-optimization/87901 */ + + +int i; +int foo () +{ + i = 0; + *((short *)&i + 1) = 1; + return i; +} + +/* we should get: + MEM <char[2]> [(int *)&i] = {}; + MEM[(short int *)&i + 2B] = 1; + in DSE1. + + Note later on the stores will be merged. */ +/* { dg-final { scan-tree-dump "return 65536;" "optimized" { target le } } } */ +/* { dg-final { scan-tree-dump "return 1;" "optimized" { target be } } } */ +/* { dg-final { scan-tree-dump "\\\[2\\\]" "dse1" } } */ + +/* { dg-final { scan-tree-dump-times "Trimming statement " 1 "dse1" } } */ + + |