From fafa4a365aed93818c7bdfa5d37b076f4dea172a Mon Sep 17 00:00:00 2001
From: uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 25 Nov 2006 09:17:57 +0000
Subject:         config/i386/i386.md (UNSPEC_TRUNC_NOOP): New unspec
 definition.         (X87MODEF): New mode macro.         (ssemodefsuffix): New
 mode attribute.         (truncxf<mode>2_i387_noop_unspec): New insn pattern. 
        (sqrt_extend<mode>xf2_i387): New insn pattern.         (sqrt<mode>2):
 For non-SSE sqrt, emit sqrt_extend<mode>xf2_i387         insn and truncate
 result back to original mode using         UNSPEC_TRUNC_NOOP truncation.     
    (*sqrt<mode>2_sse): Implement using SSEMODEF mode macro and        
 ssemodefsuffix mode attribute.         (*sqrtsf2_mixed, *sqrtsf2_i387,
 *sqrtdf2_mixed, *sqrtdf2_i387)         (*sqrtextendsfdf2_i387,
 *sqrtextendsfxf2_i387)         (*sqrtextenddfxf2_i387): Remove insn patterns.

        (fmodsf3, fmoddf3, remaindersf3, remainderdf3): Use noop
        truncation patterns.

        reg-stack.c (get_true_reg): Handle UNSPEC_TRUNC_NOOP.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@119188 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/reg-stack.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'gcc/reg-stack.c')

diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index a96b6ef57fc..aca45fe32c2 100644
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@@ -439,6 +439,13 @@ get_true_reg (rtx *pat)
 	pat = & XEXP (*pat, 0);
 	break;
 
+      case UNSPEC:
+	if (XINT (*pat, 1) == UNSPEC_TRUNC_NOOP)
+	  {
+	    pat = & XVECEXP (*pat, 0, 0);
+	    break;
+	  }
+
       case FLOAT_TRUNCATE:
 	if (!flag_unsafe_math_optimizations)
 	  return pat;
-- 
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