[PATCH] [x86] Fix unrecognizable insn of cvtss2si.

[liuhongt via Gcc-patches]

Adjust lrintmn2 operand preidcates according to real instructions.

Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}.
Ok as an obvious fix?

gcc/ChangeLog:

        PR target/107185
        * config/i386/i386.md (lrint<MODEF:mode><SWI48:mode>2): Swap
        predicate of operands[0] and operands[1].

gcc/testsuite/ChangeLog:

        * gcc.target/i386/pr107185.c: New test.
---
 gcc/config/i386/i386.md                  | 4 ++--
 gcc/testsuite/gcc.target/i386/pr107185.c | 8 ++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/pr107185.c

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 1be9b669909..947513701b9 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -20145,8 +20145,8 @@ (define_insn "lrintxf<mode>2"
    (set_attr "mode" "<MODE>")])
 
 (define_expand "lrint<MODEF:mode><SWI48:mode>2"
-  [(set (match_operand:SWI48 0 "nonimmediate_operand")
-     (unspec:SWI48 [(match_operand:MODEF 1 "register_operand")]
+  [(set (match_operand:SWI48 0 "register_operand")
+     (unspec:SWI48 [(match_operand:MODEF 1 "nonimmediate_operand")]
                   UNSPEC_FIX_NOTRUNC))]
   "SSE_FLOAT_MODE_P (<MODEF:MODE>mode) && TARGET_SSE_MATH")
 
diff --git a/gcc/testsuite/gcc.target/i386/pr107185.c 
b/gcc/testsuite/gcc.target/i386/pr107185.c
new file mode 100644
index 00000000000..333191a9a89
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr107185.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-ffast-math" } */
+
+void
+foo (float f)
+{
+  long p =  __builtin_lrintf (f);
+}
-- 
2.27.0