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i386.md (UNSPEC_C2_FLAG): New constant.

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* config/i386/i386.md (UNSPEC_C2_FLAG): New constant.
        (fpremxf4_i387, fprem1xf4_i387): Use UNSPEC_C2_FLAG.
        (fmodxf3, fmod<mode>3, remainderxf3, remainder<mode>3):
        Add LABEL_NUSES to emmitted label.
        * config/i386/i386.c (ix86_emit_fp_unordered_jump): Add
        branch probability value to emmitted jump insn.
        * reg-stack.c (subst_stack_regs_pat)[UNSPEC]: Handle UNSPEC_C2_FLAG.
        Do not check life information and do not re-arrange input operands
        for UNSPEC_FSCALE_EXP, UNSPEC_FPREM_U and UNSPEC_FPREM1_U.

From-SVN: r122793
This commit is contained in:
Uros Bizjak 2007-03-10 13:52:52 +01:00 committed by Uros Bizjak
parent 343d66ade5
commit 79cd820a29
4 changed files with 38 additions and 14 deletions
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13
gcc/ChangeLog
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@ -1,3 +1,16 @@
2007-03-10 Uros Bizjak <ubizjak@gmail.com>
PR target/31101
* config/i386/i386.md (UNSPEC_C2_FLAG): New constant.
(fpremxf4_i387, fprem1xf4_i387): Use UNSPEC_C2_FLAG.
(fmodxf3, fmod<mode>3, remainderxf3, remainder<mode>3):
Add LABEL_NUSES to emmitted label.
* config/i386/i386.c (ix86_emit_fp_unordered_jump): Add
branch probability value to emmitted jump insn.
* reg-stack.c (subst_stack_regs_pat)[UNSPEC]: Handle UNSPEC_C2_FLAG.
Do not check life information and do not re-arrange input operands
for UNSPEC_FSCALE_EXP, UNSPEC_FPREM_U and UNSPEC_FPREM1_U.
2007-03-10 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/sh.c (sh_insn_length_adjustment): Adjust for

2
gcc/config/i386/i386.c
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@ -21032,7 +21032,9 @@ ix86_emit_fp_unordered_jump (rtx label)
gen_rtx_LABEL_REF (VOIDmode, label),
pc_rtx);
temp = gen_rtx_SET (VOIDmode, pc_rtx, temp);
emit_jump_insn (temp);
predict_jump (REG_BR_PROB_BASE * 10 / 100);
}
/* Output code to perform a log1p XFmode calculation. */

12
gcc/config/i386/i386.md
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@ -144,6 +144,8 @@
(UNSPEC_FPREM1_F 90)
(UNSPEC_FPREM1_U 91)
(UNSPEC_C2_FLAG 95)
; SSP patterns
(UNSPEC_SP_SET 100)
(UNSPEC_SP_TEST 101)
@ -16315,7 +16317,8 @@
(unspec:XF [(match_dup 2) (match_dup 3)]
UNSPEC_FPREM_U))
(set (reg:CCFP FPSR_REG)
(unspec:CCFP [(const_int 0)] UNSPEC_NOP))]
(unspec:CCFP [(match_dup 2) (match_dup 3)]
UNSPEC_C2_FLAG))]
"TARGET_USE_FANCY_MATH_387"
"fprem"
[(set_attr "type" "fpspc")
@ -16334,6 +16337,7 @@
emit_insn (gen_fpremxf4_i387 (operands[1], operands[2],
operands[1], operands[2]));
ix86_emit_fp_unordered_jump (label);
LABEL_NUSES (label) = 1;
emit_move_insn (operands[0], operands[1]);
DONE;
@ -16356,6 +16360,7 @@
emit_label (label);
emit_insn (gen_fpremxf4_i387 (op1, op2, op1, op2));
ix86_emit_fp_unordered_jump (label);
LABEL_NUSES (label) = 1;
/* Truncate the result properly for strict SSE math. */
if (SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH
@ -16376,7 +16381,8 @@
(unspec:XF [(match_dup 2) (match_dup 3)]
UNSPEC_FPREM1_U))
(set (reg:CCFP FPSR_REG)
(unspec:CCFP [(const_int 0)] UNSPEC_NOP))]
(unspec:CCFP [(match_dup 2) (match_dup 3)]
UNSPEC_C2_FLAG))]
"TARGET_USE_FANCY_MATH_387"
"fprem1"
[(set_attr "type" "fpspc")
@ -16395,6 +16401,7 @@
emit_insn (gen_fprem1xf4_i387 (operands[1], operands[2],
operands[1], operands[2]));
ix86_emit_fp_unordered_jump (label);
LABEL_NUSES (label) = 1;
emit_move_insn (operands[0], operands[1]);
DONE;
@ -16418,6 +16425,7 @@
emit_insn (gen_fprem1xf4_i387 (op1, op2, op1, op2));
ix86_emit_fp_unordered_jump (label);
LABEL_NUSES (label) = 1;
/* Truncate the result properly for strict SSE math. */
if (SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH

25
gcc/reg-stack.c
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@ -1759,7 +1759,7 @@ subst_stack_regs_pat (rtx insn, stack regstack, rtx pat)
case UNSPEC_FSCALE_FRACT:
case UNSPEC_FPREM_F:
case UNSPEC_FPREM1_F:
/* These insns operate on the top two stack slots.
/* These insns operate on the top two stack slots,
first part of double input, double output insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
@ -1791,22 +1791,12 @@ subst_stack_regs_pat (rtx insn, stack regstack, rtx pat)
case UNSPEC_FSCALE_EXP:
case UNSPEC_FPREM_U:
case UNSPEC_FPREM1_U:
/* These insns operate on the top two stack slots./
/* These insns operate on the top two stack slots,
second part of double input, double output insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1));
src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
/* Inputs should never die, they are
replaced with outputs. */
gcc_assert (!src1_note);
gcc_assert (!src2_note);
swap_to_top (insn, regstack, *src1, *src2);
/* Push the result back onto stack. Fill empty slot from
first part of insn and fix top of stack pointer. */
if (STACK_REG_P (*dest))
@ -1820,6 +1810,17 @@ subst_stack_regs_pat (rtx insn, stack regstack, rtx pat)
replace_reg (src2, FIRST_STACK_REG + 1);
break;
case UNSPEC_C2_FLAG:
/* This insn operates on the top two stack slots,
third part of C2 setting double input insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
replace_reg (src1, FIRST_STACK_REG);
replace_reg (src2, FIRST_STACK_REG + 1);
break;
case UNSPEC_SAHF:
/* (unspec [(unspec [(compare)] UNSPEC_FNSTSW)] UNSPEC_SAHF)
The combination matches the PPRO fcomi instruction. */