[PATCH, i386]: Fix ICE in tree-ssa/prefetch-[89].c

[Uros Bizjak]

Hello!

Renaming UNSPEC_MOVNT to UNSPEC_MOVNTI was not a good idea, since it caused [1]:

prefetch-8.c: In function ‘test’:
prefetch-8.c:16:1: error: unrecognizable insn:
(insn 15 14 16 4 (set (mem:SI (plus:SI (mult:SI (reg/v:SI 64 [ i ])
                    (const_int 4 [0x4]))
                (reg/f:SI 65)) [2 MEM[symbol: a, index: i_9, step: 4,
offset: 0B]+0 S4 A32])
        (unspec:SI [
                (reg:SI 66)
            ] UNSPEC_MOVNT)) prefetch-8.c:15 -1
     (nil))
prefetch-8.c:16:1: internal compiler error: in extract_insn, at recog.c:2137

Fixed by attached patch that also added missing modes to STORENT_MODE
mode iterator.

2011-11-20  Uros Bizjak  <ubiz...@gmail.com>

        * config/i386/i386.md (UNSPEC_MOVNTI): Remove.
        (UNSPEC_MOVNTQ): New unspec.
        * config/i386/mmx.md (sse_movntdi): Use UNSPEC_MOVNTQ instead of
        UNSPEC_MOVNT.
        * config/i386/sse.md (sse2_movnti<mode>): Use UNSPEC_MOVNT instead of
        UNSPEC_MOVNTI.
        (STORENT_MODE): Add DI and V4DI modes.

Patch was tested on x86_64-pc-linux-gnu {,-m32} and committed to mainline SVN.

[1] http://gcc.gnu.org/ml/gcc-testresults/2011-11/msg02046.html

Uros.

Index: config/i386/i386.md
===================================================================
--- config/i386/i386.md (revision 181530)
+++ config/i386/i386.md (working copy)
@@ -115,8 +115,8 @@
   UNSPEC_FIX_NOTRUNC
   UNSPEC_MASKMOV
   UNSPEC_MOVMSK
+  UNSPEC_MOVNTQ
   UNSPEC_MOVNT
-  UNSPEC_MOVNTI
   UNSPEC_MOVU
   UNSPEC_RCP
   UNSPEC_RSQRT
Index: config/i386/mmx.md
===================================================================
--- config/i386/mmx.md  (revision 181530)
+++ config/i386/mmx.md  (working copy)
@@ -332,7 +332,7 @@
 (define_insn "sse_movntdi"
   [(set (match_operand:DI 0 "memory_operand" "=m")
        (unspec:DI [(match_operand:DI 1 "register_operand" "y")]
-                  UNSPEC_MOVNT))]
+                  UNSPEC_MOVNTQ))]
   "TARGET_SSE || TARGET_3DNOW_A"
   "movntq\t{%1, %0|%0, %1}"
   [(set_attr "type" "mmxmov")
Index: config/i386/sse.md
===================================================================
--- config/i386/sse.md  (revision 181530)
+++ config/i386/sse.md  (working copy)
@@ -576,7 +576,7 @@
 (define_insn "sse2_movnti<mode>"
   [(set (match_operand:SWI48 0 "memory_operand" "=m")
        (unspec:SWI48 [(match_operand:SWI48 1 "register_operand" "r")]
-                     UNSPEC_MOVNTI))]
+                     UNSPEC_MOVNT))]
   "TARGET_SSE2"
   "movnti\t{%1, %0|%0, %1}"
   [(set_attr "type" "ssemov")
@@ -614,8 +614,9 @@
 
 ;; Modes handled by storent patterns.
 (define_mode_iterator STORENT_MODE
-  [(SI "TARGET_SSE2") (SF "TARGET_SSE4A") (DF "TARGET_SSE4A")
-   (V2DI "TARGET_SSE2")
+  [(DI "TARGET_SSE2 && TARGET_64BIT") (SI "TARGET_SSE2")
+   (SF "TARGET_SSE4A") (DF "TARGET_SSE4A")
+   (V4DI "TARGET_AVX") (V2DI "TARGET_SSE2")
    (V8SF "TARGET_AVX") V4SF
    (V4DF "TARGET_AVX") (V2DF "TARGET_SSE2")])