* config/gofast.h (GOFAST_RENAME_LIBCALLS): Set gt and ge as

NULL_RTX.  Set all HFmode operations as NULL_RTX.
* optabs.c (prepare_float_lib_cmp) <GT, GE, LT, LE>: If libfunc is
NULL_RTX, try reversing the comparison and the operands.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@50422 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 121 insertions, 0 deletions

diff --git a/gcc/optabs.c b/gcc/optabs.c
index 0db33ca0667..94927b9b2fe 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -3399,6 +3399,7 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
      int *punsignedp;
 {
   enum rtx_code comparison = *pcomparison;
+  rtx tmp;
   rtx x = *px = protect_from_queue (*px, 0);
   rtx y = *py = protect_from_queue (*py, 0);
   enum machine_mode mode = GET_MODE (x);
@@ -3418,18 +3419,42 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
 
       case GT:
 	libfunc = gthf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LT;
+	    libfunc = lthf2_libfunc;
+	  }
 	break;
 
       case GE:
 	libfunc = gehf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LE;
+	    libfunc = lehf2_libfunc;
+	  }
 	break;
 
       case LT:
 	libfunc = lthf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GT;
+	    libfunc = gthf2_libfunc;
+	  }
 	break;
 
       case LE:
 	libfunc = lehf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GE;
+	    libfunc = gehf2_libfunc;
+	  }
 	break;
 
       case UNORDERED:
@@ -3452,18 +3477,42 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
 
       case GT:
 	libfunc = gtsf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LT;
+	    libfunc = ltsf2_libfunc;
+	  }
 	break;
 
       case GE:
 	libfunc = gesf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LE;
+	    libfunc = lesf2_libfunc;
+	  }
 	break;
 
       case LT:
 	libfunc = ltsf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GT;
+	    libfunc = gtsf2_libfunc;
+	  }
 	break;
 
       case LE:
 	libfunc = lesf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GE;
+	    libfunc = gesf2_libfunc;
+	  }
 	break;
 
       case UNORDERED:
@@ -3486,18 +3535,42 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
 
       case GT:
 	libfunc = gtdf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LT;
+	    libfunc = ltdf2_libfunc;
+	  }
 	break;
 
       case GE:
 	libfunc = gedf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LE;
+	    libfunc = ledf2_libfunc;
+	  }
 	break;
 
       case LT:
 	libfunc = ltdf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GT;
+	    libfunc = gtdf2_libfunc;
+	  }
 	break;
 
       case LE:
 	libfunc = ledf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GE;
+	    libfunc = gedf2_libfunc;
+	  }
 	break;
 
       case UNORDERED:
@@ -3520,18 +3593,42 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
 
       case GT:
 	libfunc = gtxf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LT;
+	    libfunc = ltxf2_libfunc;
+	  }
 	break;
 
       case GE:
 	libfunc = gexf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LE;
+	    libfunc = lexf2_libfunc;
+	  }
 	break;
 
       case LT:
 	libfunc = ltxf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GT;
+	    libfunc = gtxf2_libfunc;
+	  }
 	break;
 
       case LE:
 	libfunc = lexf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GE;
+	    libfunc = gexf2_libfunc;
+	  }
 	break;
 
       case UNORDERED:
@@ -3554,18 +3651,42 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
 
       case GT:
 	libfunc = gttf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LT;
+	    libfunc = lttf2_libfunc;
+	  }
 	break;
 
       case GE:
 	libfunc = getf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = LE;
+	    libfunc = letf2_libfunc;
+	  }
 	break;
 
       case LT:
 	libfunc = lttf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GT;
+	    libfunc = gttf2_libfunc;
+	  }
 	break;
 
       case LE:
 	libfunc = letf2_libfunc;
+	if (libfunc == NULL_RTX)
+	  {
+	    tmp = x; x = y; y = tmp;
+	    *pcomparison = GE;
+	    libfunc = getf2_libfunc;
+	  }
 	break;
 
       case UNORDERED: