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From-SVN: r609
This commit is contained in:
James Van Artsdalen 1992-03-28 06:33:41 +00:00
parent 79aa534642
commit aae7526179
2 changed files with 15 additions and 11 deletions
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23
gcc/config/i386/i386.c
View File

@ -614,6 +614,8 @@ function_prologue (file, size)
register int regno;
int limit;
rtx xops[4];
int pic_reg_used = flag_pic && (current_function_uses_pic_offset_table
|| current_function_uses_const_pool);
xops[0] = stack_pointer_rtx;
xops[1] = frame_pointer_rtx;
@ -639,14 +641,13 @@ function_prologue (file, size)
limit = (frame_pointer_needed ? FRAME_POINTER_REGNUM : STACK_POINTER_REGNUM);
for (regno = limit - 1; regno >= 0; regno--)
if ((regs_ever_live[regno] && ! call_used_regs[regno])
|| (current_function_uses_pic_offset_table
&& regno == PIC_OFFSET_TABLE_REGNUM))
|| (regno == PIC_OFFSET_TABLE_REGNUM && pic_reg_used))
{
xops[0] = gen_rtx (REG, SImode, regno);
output_asm_insn ("push%L0 %0", xops);
}
if (current_function_uses_pic_offset_table)
if (pic_reg_used)
{
xops[0] = pic_offset_table_rtx;
xops[1] = (rtx) gen_label_rtx ();
@ -675,6 +676,8 @@ simple_386_epilogue ()
int nregs = 0;
int reglimit = (frame_pointer_needed
? FRAME_POINTER_REGNUM : STACK_POINTER_REGNUM);
int pic_reg_used = flag_pic && (current_function_uses_pic_offset_table
|| current_function_uses_const_pool);
#ifdef NON_SAVING_SETJMP
if (NON_SAVING_SETJMP && current_function_calls_setjmp)
@ -686,8 +689,7 @@ simple_386_epilogue ()
for (regno = reglimit - 1; regno >= 0; regno--)
if ((regs_ever_live[regno] && ! call_used_regs[regno])
|| (current_function_uses_pic_offset_table
&& regno == PIC_OFFSET_TABLE_REGNUM))
|| (regno == PIC_OFFSET_TABLE_REGNUM && pic_reg_used))
nregs++;
return nregs == 0 || ! frame_pointer_needed;
@ -706,6 +708,8 @@ function_epilogue (file, size)
register int nregs, limit;
int offset;
rtx xops[3];
int pic_reg_used = flag_pic && (current_function_uses_pic_offset_table
|| current_function_uses_const_pool);
/* Compute the number of registers to pop */
@ -717,8 +721,7 @@ function_epilogue (file, size)
for (regno = limit - 1; regno >= 0; regno--)
if ((regs_ever_live[regno] && ! call_used_regs[regno])
|| (current_function_uses_pic_offset_table
&& regno == PIC_OFFSET_TABLE_REGNUM))
|| (regno == PIC_OFFSET_TABLE_REGNUM && pic_reg_used))
nregs++;
/* sp is often unreliable so we must go off the frame pointer,
@ -744,8 +747,7 @@ function_epilogue (file, size)
for (regno = 0; regno < limit; regno++)
if ((regs_ever_live[regno] && ! call_used_regs[regno])
|| (current_function_uses_pic_offset_table
&& regno == PIC_OFFSET_TABLE_REGNUM))
|| (regno == PIC_OFFSET_TABLE_REGNUM && pic_reg_used))
{
xops[0] = gen_rtx (REG, SImode, regno);
output_asm_insn ("pop%L0 %0", xops);
@ -754,8 +756,7 @@ function_epilogue (file, size)
else
for (regno = 0; regno < limit; regno++)
if ((regs_ever_live[regno] && ! call_used_regs[regno])
|| (current_function_uses_pic_offset_table
&& regno == PIC_OFFSET_TABLE_REGNUM))
|| (regno == PIC_OFFSET_TABLE_REGNUM && pic_reg_used))
{
xops[0] = gen_rtx (REG, SImode, regno);
xops[1] = adj_offsettable_operand (AT_BP (Pmode), offset);

3
gcc/output.h
View File

@ -138,6 +138,9 @@ extern int flag_pic;
/* This is nonzero if the current function uses pic_offset_table_rtx. */
extern int current_function_uses_pic_offset_table;
/* This is nonzero if the current function uses the constant pool. */
extern int current_function_uses_const_pool;
/* The line number of the beginning of the current function.
sdbout.c needs this so that it can output relative linenumbers. */