diff options
| author | Roger Sayle <sayle@gcc.gnu.org> | 2006-09-18 01:54:33 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-09-18 01:54:33 +0000 |
| commit | aac8b8ed8a1f8a2f26ebdad86824600f828bf8cc (patch) | |
| tree | 75f098e9bc265156e2b16c0f13768b250a6693ea /gcc/testsuite/gcc.dg/prefetch-loop-arrays-1.c | |
| parent | 8e77de24deed6692b43b91bc753d3d78895527cd (diff) | |
| download | gcc-aac8b8ed8a1f8a2f26ebdad86824600f828bf8cc.zip gcc-aac8b8ed8a1f8a2f26ebdad86824600f828bf8cc.tar.gz gcc-aac8b8ed8a1f8a2f26ebdad86824600f828bf8cc.tar.bz2 | |
re PR tree-optimization/28887 (rejects valid code (bitfields and loops) with -O1 -fprefetch-loop-arrays)
2006-09-17 Zdenek Dvorak <dvorakz@suse.cz>
PR tree-optimization/28887
* tree-ssa-loop-prefetch.c (analyze_ref): Strip nonaddressable
component parts from the reference.
(gather_memory_references_ref): Record the reference without the
nonaddressable component parts.
* gcc.dg/prefetch-loop-arrays-1.c: New test case.
From-SVN: r117012
Diffstat (limited to 'gcc/testsuite/gcc.dg/prefetch-loop-arrays-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/prefetch-loop-arrays-1.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/prefetch-loop-arrays-1.c b/gcc/testsuite/gcc.dg/prefetch-loop-arrays-1.c new file mode 100644 index 0000000..ba91d69 --- /dev/null +++ b/gcc/testsuite/gcc.dg/prefetch-loop-arrays-1.c @@ -0,0 +1,36 @@ +/* PR tree-optimization/28887 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fprefetch-loop-arrays -w" } */ +/* { dg-options "-O2 -fprefetch-loop-arrays -march=i686 -msse -w" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */ + +typedef unsigned long size_t; + +struct re_pattern_buffer +{ + size_t re_nsub; +}; + +typedef enum +{ + start_memory, +} re_opcode_t; + +typedef union +{ + struct + { + unsigned matched_something:1; + } bits; +} byte_register_info_type; + +void byte_re_match_2_internal (struct re_pattern_buffer *bufp) +{ + int mcnt; + size_t num_regs = bufp->re_nsub + 1; + byte_register_info_type *reg_info; + for (mcnt = 1; (unsigned) mcnt < num_regs; mcnt++) + { + ((reg_info[mcnt]).bits.matched_something) = 0; + } +} + |