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re PR target/86048 (.seh_savexmm offset is negative error when compiling libpng)

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PR target/86048
	* config/i386/winnt.c (i386_pe_seh_cold_init): Do not emit negative
	offsets for register save directives.  Emit a second batch of save
	directives, if need be, when the function accesses prior frames.

From-SVN: r261544
This commit is contained in:
Eric Botcazou 2018-06-13 11:20:23 +00:00 • committed by Eric Botcazou
parent 8c191c89cf
commit 70e18df76e
4 changed files with 58 additions and 4 deletions
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7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2018-06-13 Eric Botcazou <ebotcazou@adacore.com>
PR target/86048
* config/i386/winnt.c (i386_pe_seh_cold_init): Do not emit negative
offsets for register save directives. Emit a second batch of save
directives, if need be, when the function accesses prior frames.
2018-06-12 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/fpu.md (fmasf4): Force operand to register.

25
gcc/config/i386/winnt.c
View file

@ -922,11 +922,14 @@ i386_pe_seh_cold_init (FILE *f, const char *name)
fprintf (f, "\t.seh_stackalloc\t" HOST_WIDE_INT_PRINT_DEC "\n", offset);
for (int regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (seh->reg_offset[regno] > 0)
if (seh->reg_offset[regno] > 0 && seh->reg_offset[regno] <= alloc_offset)
{
fputs ((SSE_REGNO_P (regno) ? "\t.seh_savexmm\t"
: GENERAL_REGNO_P (regno) ? "\t.seh_savereg\t"
: (gcc_unreachable (), "")), f);
if (SSE_REGNO_P (regno))
fputs ("\t.seh_savexmm\t", f);
else if (GENERAL_REGNO_P (regno))
fputs ("\t.seh_savereg\t", f);
else
gcc_unreachable ();
print_reg (gen_rtx_REG (DImode, regno), 0, f);
fprintf (f, ", " HOST_WIDE_INT_PRINT_DEC "\n",
alloc_offset - seh->reg_offset[regno]);
@ -949,6 +952,20 @@ i386_pe_seh_cold_init (FILE *f, const char *name)
offset = seh->sp_offset - alloc_offset;
if (offset > 0 && offset < SEH_MAX_FRAME_SIZE)
fprintf (f, "\t.seh_stackalloc\t" HOST_WIDE_INT_PRINT_DEC "\n", offset);
for (int regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (seh->reg_offset[regno] > alloc_offset)
{
if (SSE_REGNO_P (regno))
fputs ("\t.seh_savexmm\t", f);
else if (GENERAL_REGNO_P (regno))
fputs ("\t.seh_savereg\t", f);
else
gcc_unreachable ();
print_reg (gen_rtx_REG (DImode, regno), 0, f);
fprintf (f, ", " HOST_WIDE_INT_PRINT_DEC "\n",
seh->sp_offset - seh->reg_offset[regno]);
}
}
fputs ("\t.seh_endprologue\n", f);

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2018-06-13 Eric Botcazou <ebotcazou@adacore.com>
* gcc.target/i386/pr86048.c: New test.
2018-06-12 Claudiu Zissulescu <claziss@synopsys.com>
* gcc.target/arc/fma-1.c: New test.

26
gcc/testsuite/gcc.target/i386/pr86048.c Normal file
View file

@ -0,0 +1,26 @@
/* PR target/86048 */
/* { dg-do assemble } */
/* { dg-options "-O2" } */
/* { dg-require-effective-target return_address } */
extern void abort (void);
void *foo (unsigned int *data, unsigned int len)
{
unsigned int local_data[128];
if (len > 128)
abort ();
for (unsigned int i = 0; i < len; i++)
local_data[i] = data[i] + data[len - 1 - i] * 2;
void *ret = __builtin_frame_address (0);
for (unsigned int i = 0; i < len; i++)
ret = ret + local_data[i] % 8;
__asm__ __volatile__ ("" : : : "%xmm6");
return ret;
}