From 9438fd38e42657f75d26ad468a5b3139fd9cc404 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 5 Aug 2008 15:41:59 +0000 Subject: gcc/ 2008-08-05 H.J. Lu PR middle-end/37010 * calls.c (expand_call): Use the biggest preferred stack boundary. gcc/testsuite/ 2008-08-05 H.J. Lu PR middle-end/37010 * gcc.dg/torture/stackalign/push-1.c: New. git-svn-id: https://gcc.gnu.org/svn/gcc/branches/stack@138730 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog.stackalign | 6 +++ gcc/calls.c | 7 ++- gcc/testsuite/ChangeLog.stackalign | 5 ++ gcc/testsuite/gcc.dg/torture/stackalign/push-1.c | 59 ++++++++++++++++++++++++ 4 files changed, 75 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/torture/stackalign/push-1.c diff --git a/gcc/ChangeLog.stackalign b/gcc/ChangeLog.stackalign index ea7d1086f4c..da3329b62fc 100644 --- a/gcc/ChangeLog.stackalign +++ b/gcc/ChangeLog.stackalign @@ -1,3 +1,9 @@ +2008-08-05 H.J. Lu + + PR middle-end/37010 + * calls.c (expand_call): Use the biggest preferred stack + boundary. + 2008-08-04 H.J. Lu * config/i386/i386.c (ix86_expand_push): Set memory alignment diff --git a/gcc/calls.c b/gcc/calls.c index d48c0d15654..146f251d510 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -2319,10 +2319,13 @@ expand_call (tree exp, rtx target, int ignore) || !lang_hooks.decls.ok_for_sibcall (fndecl)) try_tail_call = 0; - /* Ensure current function's preferred stack - boundary is at least what we need. */ + /* Ensure current function's preferred stack boundary is at least + what we need. Stack alignment may also increase preferred stack + boundary. */ if (crtl->preferred_stack_boundary < preferred_stack_boundary) crtl->preferred_stack_boundary = preferred_stack_boundary; + else + preferred_stack_boundary = crtl->preferred_stack_boundary; preferred_unit_stack_boundary = preferred_stack_boundary / BITS_PER_UNIT; diff --git a/gcc/testsuite/ChangeLog.stackalign b/gcc/testsuite/ChangeLog.stackalign index 29c2fe6012f..2a348d00eee 100644 --- a/gcc/testsuite/ChangeLog.stackalign +++ b/gcc/testsuite/ChangeLog.stackalign @@ -1,3 +1,8 @@ +2008-08-05 H.J. Lu + + PR middle-end/37010 + * gcc.dg/torture/stackalign/push-1.c: New. + 2008-08-04 H.J. Lu PR middle-end/37009 diff --git a/gcc/testsuite/gcc.dg/torture/stackalign/push-1.c b/gcc/testsuite/gcc.dg/torture/stackalign/push-1.c new file mode 100644 index 00000000000..7417324e4bb --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/stackalign/push-1.c @@ -0,0 +1,59 @@ +/* PR middle-end/37010 */ +/* { dg-do run { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */ +/* { dg-options "-msse2 -mpreferred-stack-boundary=2" } */ + +#include +#include "cpuid.h" + +typedef __PTRDIFF_TYPE__ ptrdiff_t; +typedef float __m128 __attribute__ ((__vector_size__ (16), __may_alias__)); +typedef int aligned __attribute__((aligned(16))); + +extern void abort (void); + +__m128 r; + +int +__attribute__ ((noinline)) +check_int (int *i, int align) +{ + *i = 20; + if ((((ptrdiff_t) i) & (align - 1)) != 0) + { + abort (); + } + return *i; +} + +void +__attribute__ ((noinline)) +foo (__m128 x, __m128 y ,__m128 z ,__m128 a, int size) +{ + aligned i; + + if (size != 5 || check_int (&i, __alignof__(i)) != i) + abort (); + + r = a; +} + +int +main (void) +{ + __m128 x = { 1.0 }; + unsigned int eax, ebx, ecx, edx; + + if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx)) + return 0; + + /* Run SSE2 test only if host has SSE2 support. */ + if (edx & bit_SSE2) + { + foo (x, x, x, x, 5); + + if (__builtin_memcmp (&r, &x, sizeof (r))) + abort (); + } + + return 0; +} -- cgit v1.2.3