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Actually check in the fix 

From-SVN: r220416
This commit is contained in:
H.J. Lu 2015-02-04 12:02:21 -08:00
parent 7489140d7d
commit d303ff9764
2 changed files with 24 additions and 0 deletions
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2
gcc/lra-eliminations.c
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@ -182,6 +182,8 @@ setup_can_eliminate (struct lra_elim_table *ep, bool value)
if (! value
&& ep->from == FRAME_POINTER_REGNUM && ep->to == STACK_POINTER_REGNUM)
frame_pointer_needed = 1;
if (!frame_pointer_needed)
REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = 0;
}
/* Map: eliminable "from" register -> its current elimination,

22
gcc/testsuite/gcc.target/i386/pr64905.c Normal file
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@ -0,0 +1,22 @@
/* { dg-do compile { target { ! ia32 } } } */
/* { dg-options "-Os -ffixed-rax -ffixed-rbx -ffixed-rcx -ffixed-rdx -ffixed-rdi -ffixed-rsi -ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 -ffixed-r13 -ffixed-r14 -ffixed-r15" } */
/* { dg-final { scan-assembler-not "movl\[ \t\]0\\(%.*\\), %.*" } } */
typedef unsigned short uint16_t;
uint16_t a_global;
void __attribute__ ((noinline))
function (uint16_t **a_p)
{
// unaligned access by address in %rbp: mov 0x0(%rbp),%ebp
a_global = **a_p;
}
int main(int argc, char **argv)
{
uint16_t array [4] = { 1, 2, 3, 4 };
uint16_t *array_elem_p = &array [3];
function (&array_elem_p);
return 0;
}