i386.c (ix86_emit_fp_unordered_jump): Set JUMP_LABEL to the jump insn.

	* config/i386/i386.c (ix86_emit_fp_unordered_jump):
	Set JUMP_LABEL to the jump insn.
	(ix86_emit_i387_log1p): Use ix86_expand_branch to expand branch.
	Predict emitted jump and add label to jump insn.

From-SVN: r265274

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b97a8a2461b6a316ba80abac9e99d64463d4b7a3..d86dea87213c3047c4c018585c54285648937a96 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-10-18  Uros Bizjak  <ubizjak@gmail.com>
+
+       * config/i386/i386.c (ix86_emit_fp_unordered_jump):
+       Set JUMP_LABEL to the jump insn.
+       (ix86_emit_i387_log1p): Use ix86_expand_branch to expand branch.
+       Predict emitted jump and add label to jump insn.
+
 2018-10-18  David Malcolm  <dmalcolm@redhat.com>
 
        PR tree-optimization/87562

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 03324c0d5acc4f10a6f358871772be6883a5af15..e47603eb5ff6144af01f60c1eaf59fffc77e82c6 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -43866,6 +43866,7 @@ void
 ix86_emit_fp_unordered_jump (rtx label)
 {
   rtx reg = gen_reg_rtx (HImode);
+  rtx_insn *insn;
   rtx temp;
 
   emit_insn (gen_x86_fnstsw_1 (reg));
@@ -43888,10 +43889,9 @@ ix86_emit_fp_unordered_jump (rtx label)
   temp = gen_rtx_IF_THEN_ELSE (VOIDmode, temp,
                              gen_rtx_LABEL_REF (VOIDmode, label),
                              pc_rtx);
-  temp = gen_rtx_SET (pc_rtx, temp);
-
-  emit_jump_insn (temp);
+  insn = emit_jump_insn (gen_rtx_SET (pc_rtx, temp));
   predict_jump (REG_BR_PROB_BASE * 10 / 100);
+  JUMP_LABEL (insn) = label;
 }
 
 /* Output code to perform a log1p XFmode calculation.  */
@@ -43902,27 +43902,36 @@ void ix86_emit_i387_log1p (rtx op0, rtx op1)
   rtx_code_label *label2 = gen_label_rtx ();
 
   rtx tmp = gen_reg_rtx (XFmode);
-  rtx tmp2 = gen_reg_rtx (XFmode);
-  rtx test;
+  rtx res = gen_reg_rtx (XFmode);
+  rtx cst, cstln2, cst1;
+  rtx_insn *insn;
+
+  cst = const_double_from_real_value
+    (REAL_VALUE_ATOF ("0.29289321881345247561810596348408353", XFmode), XFmode);
+  cstln2 = force_reg (XFmode, standard_80387_constant_rtx (4)); /* fldln2 */
 
   emit_insn (gen_absxf2 (tmp, op1));
-  emit_move_insn (tmp2, standard_80387_constant_rtx (4)); /* fldln2 */
-  test = gen_rtx_GE (VOIDmode, tmp,
-    const_double_from_real_value (
-       REAL_VALUE_ATOF ("0.29289321881345247561810596348408353", XFmode),
-       XFmode));
-  emit_jump_insn
-    (gen_cbranchxf4 (test, XEXP (test, 0), XEXP (test, 1), label1));
-
-  emit_insn (gen_fyl2xp1xf3_i387 (op0, op1, tmp2));
+
+  cst = force_reg (XFmode, cst);
+  ix86_expand_branch (GE, tmp, cst, label1);
+  predict_jump (REG_BR_PROB_BASE * 10 / 100);
+  insn = get_last_insn ();
+  JUMP_LABEL (insn) = label1;
+
+  emit_insn (gen_fyl2xp1xf3_i387 (res, op1, cstln2));
   emit_jump (label2);
 
   emit_label (label1);
-  emit_move_insn (tmp, CONST1_RTX (XFmode));
-  emit_insn (gen_addxf3 (tmp, op1, tmp));
-  emit_insn (gen_fyl2xxf3_i387 (op0, tmp, tmp2));
+  LABEL_NUSES (label1) = 1;
+
+  cst1 = force_reg (XFmode, CONST1_RTX (XFmode));
+  emit_insn (gen_rtx_SET (tmp, gen_rtx_PLUS (XFmode, op1, cst1)));
+  emit_insn (gen_fyl2xxf3_i387 (res, tmp, cstln2));
 
   emit_label (label2);
+  LABEL_NUSES (label2) = 1;
+
+  emit_move_insn (op0, res);
 }
 
 /* Emit code for round calculation.  */
@@ -43939,7 +43948,8 @@ void ix86_emit_i387_round (rtx op0, rtx op1)
   rtx_code_label *jump_label = gen_label_rtx ();
   rtx (*floor_insn) (rtx, rtx);
   rtx (*neg_insn) (rtx, rtx);
-  rtx insn, tmp;
+  rtx_insn *insn;
+  rtx tmp;
 
   switch (inmode)
     {