| Message ID | 002701cc6d32$5d6e64d0$184b2e70$@guo@arm.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/gcc/testsuite/gcc.dg/ipa/ipa-sra-2.c b/gcc/testsuite/gcc.dg/ipa/ipa-sra-2.c index 3437a81..c6b4d63 100644 --- a/gcc/testsuite/gcc.dg/ipa/ipa-sra-2.c +++ b/gcc/testsuite/gcc.dg/ipa/ipa-sra-2.c @@ -1,5 +1,6 @@ /* { dg-do compile } */ /* { dg-options "-O2 -fipa-sra -fdump-tree-eipa_sra-details" } */ +/* { dg-require-effective-target non_strict_align } */ struct bovid {
Hello, The SRA optimization requires the reference to struct/union member must be aligned to their natural boundary e.g. (int *) must be aligned to 4 byte boundary. This is done in function tree_non_mode_aligned_mem_p. For target like x86 that define "STRICT_ALIGNMENT" to 0, the function return false. Afterward, the SRA is conducted. For target like ARM or MIPS that define "STRICT_ALIGNMENT" to 1, the alignment status is checked by "align = get_object_alignment (exp)". The function get_object_alignment rely on SSA and tend to over-conservative. So for most cases, the SRA is stopped here. This patch intends to skip this case for target that set STRICT_ALIGNMENT to 1 otherwise the case will fail due to the SRA isn't performed actually. OK to commit to trunk? BR, Terry 2011-09-07 Terry Guo <terry.guo@arm.com> * gcc.dg/ipa/ipa-sra-2.c: Only run on targets that are non_strict_align.