From e9c9e772e22cd76f57154167b6cda9113323cf31 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 9 Jul 2015 09:28:19 +0000 Subject: [PATCH] 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 --- gcc/ChangeLog | 6 ++++++ gcc/config/i386/i386.h | 2 +- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.target/i386/pr66818.c | 5 +++++ 4 files changed, 17 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/i386/pr66818.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 78cc6f94553..e7f7dace4b4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-07-09 H.J. Lu + + PR target/66818 + * config/i386/i386.h (ATTRIBUTE_ALIGNED_VALUE): Defined to 32 + for IA MCU. + 2015-07-09 H.J. Lu PR target/66817 diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index f357e79d780..74334ff0c5e 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -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) \ diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 42b62031623..49d6f2bf111 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-07-09 H.J. Lu + + PR target/66818 + * gcc.target/i386/pr66818.c: New test. + 2015-07-09 H.J. Lu PR target/66817 diff --git a/gcc/testsuite/gcc.target/i386/pr66818.c b/gcc/testsuite/gcc.target/i386/pr66818.c new file mode 100644 index 00000000000..d90394cab2e --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr66818.c @@ -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]; -- 2.30.2