diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c b/gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c new file mode 100644 index 0000000..577a5b5 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c @@ -0,0 +1,28 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fno-tree-sra -fdump-tree-optimized -fdump-tree-forwprop1-details" } */ + +extern void link_error (void); + +/* Check for copyprop on structs with zeroing. */ +#define vector16 __attribute__((vector_size(64))) + +struct g +{ + vector16 unsigned char t; +}; + +struct g f(void) +{ + struct g temp_struct1 ; + temp_struct1.t = (vector16 unsigned char){}; + struct g temp_struct2 = temp_struct1; + struct g temp_struct3 = temp_struct2; + struct g temp_struct4 = temp_struct3; + return temp_struct4; +} + +/* There should be no references to any of "temp_struct*" + temporaries. */ +/* { dg-final { scan-tree-dump-times "temp_struct" 0 "optimized" } } */ +/* Also check that forwprop pass did the copy prop. */ +/* { dg-final { scan-tree-dump-times "after previous" 4 "forwprop1" } } */ |