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Define ATTRIBUTE_ALIGNED_VALUE to 32 for IA MCU 

attribute ((aligned)) should align to the minimum of BIGGEST_ALIGNMENT,
which is 4 bytes for -miamcu.

gcc/

	PR target/66818
	* config/i386/i386.h (ATTRIBUTE_ALIGNED_VALUE): Defined to 32
	for IA MCU.

gcc/testsuite/

	PR target/66818
	* gcc.target/i386/pr66818.c: New test.

From-SVN: r225606
This commit is contained in:
H.J. Lu 2015-07-09 09:28:19 +00:00 committed by H.J. Lu
parent 661c8707bf
commit e9c9e772e2
4 changed files with 17 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-07-09 H.J. Lu <hongjiu.lu@intel.com>
PR target/66818
* config/i386/i386.h (ATTRIBUTE_ALIGNED_VALUE): Defined to 32
for IA MCU.
2015-07-09 H.J. Lu <hongjiu.lu@intel.com>
PR target/66817

2
gcc/config/i386/i386.h
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@ -811,7 +811,7 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
/* Alignment value for attribute ((aligned)). It is a constant since
it is the part of the ABI. We shouldn't change it with -mavx. */
#define ATTRIBUTE_ALIGNED_VALUE 128
#define ATTRIBUTE_ALIGNED_VALUE (TARGET_IAMCU ? 32 : 128)
/* Decide whether a variable of mode MODE should be 128 bit aligned. */
#define ALIGN_MODE_128(MODE) \

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2015-07-09 H.J. Lu <hongjiu.lu@intel.com>
PR target/66818
* gcc.target/i386/pr66818.c: New test.
2015-07-09 H.J. Lu <hongjiu.lu@intel.com>
PR target/66817

5
gcc/testsuite/gcc.target/i386/pr66818.c Normal file
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@ -0,0 +1,5 @@
/* { dg-do compile { target ia32 } } */
/* { dg-options "-O2 -mno-sse -mno-mmx -miamcu" } */
struct dummy { int x __attribute__((aligned)); };
int array[__alignof__(struct dummy) == 4 ? 1 : -1];