Index: i386.md
===================================================================
--- i386.md	(revision 123537)
+++ i386.md	(working copy)
@@ -4439,6 +4439,7 @@
 	(fix:X87MODEI (match_operand 1 "register_operand" "f,f")))]
   "TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !((SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
 	 && (TARGET_64BIT || <MODE>mode != DImode))
 	&& TARGET_SSE_MATH)
@@ -4467,6 +4468,7 @@
    (clobber (match_scratch:XF 2 "=&1f"))]
   "TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !((SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
 	 && (TARGET_64BIT || <MODE>mode != DImode))
 	&& TARGET_SSE_MATH)"
@@ -4481,6 +4483,7 @@
    (clobber (match_scratch:XF 3 "=&1f,&1f"))]
   "TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !((SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
 	&& (TARGET_64BIT || <MODE>mode != DImode))
 	&& TARGET_SSE_MATH)"
@@ -4520,6 +4523,7 @@
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_80387 && !TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !(SSE_FLOAT_MODE_P (GET_MODE (operands[1]))
 	 && (TARGET_64BIT || <MODE>mode != DImode))
    && !(reload_completed || reload_in_progress)"
@@ -4555,6 +4559,7 @@
    (clobber (match_scratch:XF 4 "=&1f"))]
   "TARGET_80387 && !TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !(TARGET_64BIT && SSE_FLOAT_MODE_P (GET_MODE (operands[1])))"
   "* return output_fix_trunc (insn, operands, 0);"
   [(set_attr "type" "fistp")
@@ -4570,6 +4575,7 @@
    (clobber (match_scratch:XF 5 "=&1f,&1f"))]
   "TARGET_80387 && !TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !(TARGET_64BIT && SSE_FLOAT_MODE_P (GET_MODE (operands[1])))"
   "#"
   [(set_attr "type" "fistp")
@@ -4612,6 +4618,7 @@
    (use (match_operand:HI 3 "memory_operand" "m"))]
   "TARGET_80387 && !TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !SSE_FLOAT_MODE_P (GET_MODE (operands[1]))"
   "* return output_fix_trunc (insn, operands, 0);"
   [(set_attr "type" "fistp")
@@ -4626,6 +4633,7 @@
    (clobber (match_operand:X87MODEI12 4 "memory_operand" "=m,m"))]
   "TARGET_80387 && !TARGET_FISTTP
    && FLOAT_MODE_P (GET_MODE (operands[1]))
+   && GET_MODE (operands[1]) != TFmode
    && !SSE_FLOAT_MODE_P (GET_MODE (operands[1]))"
   "#"
   [(set_attr "type" "fistp")
Index: i386.c
===================================================================
--- i386.c	(revision 123537)
+++ i386.c	(working copy)
@@ -9243,6 +9243,8 @@ output_fix_trunc (rtx insn, rtx *operand
   int dimode_p = GET_MODE (operands[0]) == DImode;
   int round_mode = get_attr_i387_cw (insn);
 
+  gcc_assert (GET_MODE (operands[1]) != TFmode);
+
   /* Jump through a hoop or two for DImode, since the hardware has no
      non-popping instruction.  We used to do this a different way, but
      that was somewhat fragile and broke with post-reload splitters.  */