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i386: Redefine indirect_thunks_used as HARD_REG_SET.

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Change indirect_thunks_used to HARD_REG_SET to avoid recalculations
of correct register numbers and allow usage of SET/TEST_HARD_REG_BIT
accessors.

2021-11-17  Uroš Bizjak  <ubizjak@gmail.com>

gcc/ChangeLog:

	* config/i386/i386.c (indirect_thunks_used): Redefine as HARD_REG_SET.
	(ix86_code_end): Use TEST_HARD_REG_BIT on indirect_thunks_used.
	(ix86_output_indirect_branch_via_reg): Use SET_HARD_REG_BIT
	on indirect_thunks_used.
	(ix86_output_indirect_function_return): Ditto.
This commit is contained in:
Uros Bizjak 2021-11-17 20:47:48 +01:00
parent 74509b963e
commit 69a5b3ca5c
1 changed files with 6 additions and 11 deletions
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17
gcc/config/i386/i386.c
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@ -5733,7 +5733,7 @@ static bool indirect_thunk_needed = false;
/* Bit masks of integer registers, which contain branch target, used
by call thunk functions. */
static int indirect_thunks_used;
static HARD_REG_SET indirect_thunks_used;
/* True if return thunk function is needed. */
static bool indirect_return_needed = false;
@ -6030,8 +6030,7 @@ ix86_code_end (void)
for (regno = FIRST_REX_INT_REG; regno <= LAST_REX_INT_REG; regno++)
{
unsigned int i = regno - FIRST_REX_INT_REG + LAST_INT_REG + 1;
if ((indirect_thunks_used & (1 << i)))
if (TEST_HARD_REG_BIT (indirect_thunks_used, regno))
output_indirect_thunk_function (indirect_thunk_prefix_none,
regno, false);
}
@ -6041,7 +6040,7 @@ ix86_code_end (void)
char name[32];
tree decl;
if ((indirect_thunks_used & (1 << regno)))
if (TEST_HARD_REG_BIT (indirect_thunks_used, regno))
output_indirect_thunk_function (indirect_thunk_prefix_none,
regno, false);
@ -16014,12 +16013,8 @@ ix86_output_indirect_branch_via_reg (rtx call_op, bool sibcall_p)
!= indirect_branch_thunk_inline)
{
if (cfun->machine->indirect_branch_type == indirect_branch_thunk)
{
int i = regno;
if (i >= FIRST_REX_INT_REG)
i -= (FIRST_REX_INT_REG - LAST_INT_REG - 1);
indirect_thunks_used |= 1 << i;
}
SET_HARD_REG_BIT (indirect_thunks_used, regno);
indirect_thunk_name (thunk_name_buf, regno, need_prefix, false);
thunk_name = thunk_name_buf;
}
@ -16307,7 +16302,7 @@ ix86_output_indirect_function_return (rtx ret_op)
if (need_thunk)
{
indirect_return_via_cx = true;
indirect_thunks_used |= 1 << CX_REG;
SET_HARD_REG_BIT (indirect_thunks_used, CX_REG);
}
fprintf (asm_out_file, "\tjmp\t");
assemble_name (asm_out_file, thunk_name);