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34 lines
1.4 KiB
Diff
34 lines
1.4 KiB
Diff
commit 8a66d422721ae5999737d7825701ff22097d287b
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Author: Andrew Hsieh <andrewhsieh@google.com>
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Date: Mon Apr 14 21:05:51 2014 -0700
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[android] Fix ARM generates insufficient alignment for NEON vst/vld
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See d909af3e2469aad87d5c3e79b93c778fd26c03a9
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Change-Id: Ie1de9f946f397196bb6f1623f5add86933739484
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Signed-off-by: Dmitry Moskalchuk <dm@crystax.net>
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---
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gcc/config/arm/arm.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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--- a/gcc/config/arm/arm.c
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+++ b/gcc/config/arm/arm.c
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@@ -22862,9 +22862,13 @@ arm_print_operand (FILE *stream, rtx x,
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memsize = MEM_SIZE (x);
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/* Only certain alignment specifiers are supported by the hardware. */
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- if (memsize == 32 && (align % 32) == 0)
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+ /* Note that ARM EABI only guarentees 8-byte stack alignment. While GCC
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+ honors stricter alignment of composite type in user code, it doesn't
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+ observe the alignment of memory passed as an extra argument for function
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+ returning large composite type. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57271 */
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+ if (memsize == 32 && (align % 32) == 0 && !TARGET_AAPCS_BASED)
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align_bits = 256;
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- else if ((memsize == 16 || memsize == 32) && (align % 16) == 0)
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+ else if ((memsize == 16 || memsize == 32) && (align % 16) == 0 && !TARGET_AAPCS_BASED)
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align_bits = 128;
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else if (memsize >= 8 && (align % 8) == 0)
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align_bits = 64;
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