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[Bug c/45600] New: gcc generates illegal AVX aligned moves
- From: "greened at obbligato dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 8 Sep 2010 16:08:12 -0000
- Subject: [Bug c/45600] New: gcc generates illegal AVX aligned moves
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
For the attached testcase, gcc generates a vmovapd for the store to
llvm_cbe__24__StackDv_P53. The latest Intel sde generates an alignment error:
SDE ERROR: ALIGN32 FAILED PC=40048b MEMEA=7ffffff057d0 vmovapd ymmword ptr
[rax], ymm0
It looks like gcc is considering 16-byte aligned data to be suitable for a
256-bit vmovapd, which it isn't.
--
Summary: gcc generates illegal AVX aligned moves
Product: gcc
Version: 4.5.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: greened at obbligato dot org
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45600