[PATCH] [x86] Fix ICE due to incorrect insn type.

[liuhongt <hongtao.liu@intel.com>]

;; if reg/mem op
(define_insn_reservation  "slm_sseishft_3" 2
  (and (eq_attr "cpu" "slm")
       (and (eq_attr "type" "sseishft")
            (not (match_operand 2 "immediate_operand"))))
  "slm-complex, slm-all-eu")

in slm.md it will check operands[2] for type sseishft, but for
extendbfsf2_1 there's no second operand which caused ICE.
The patch set type from sseishft to sseishft1 to fix the issue.

Bootstrapped and regtested on x86_64-pc-linu-gnu{-m32,}.
Ready to push as an obvious patch.

gcc/ChangeLog:

	PR target/107934
	* config/i386/i386.md (extendbfsf2_1): Change type from
	sseishft to sseishft1.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/pr107934.c: New test.
---
 gcc/config/i386/i386.md                  | 2 +-
 gcc/testsuite/gcc.target/i386/pr107934.c | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/pr107934.c

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 9451883396c..9e1d9eec862 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -4981,7 +4981,7 @@ (define_insn "extendbfsf2_1"
   pslld\t{$16, %0|%0, 16}
   vpslld\t{$16, %1, %0|%0, %1, 16}"
   [(set_attr "isa" "noavx,avx")
-   (set_attr "type" "sseishft")
+   (set_attr "type" "sseishft1")
    (set_attr "length_immediate" "1")
    (set_attr "prefix_data16" "1,*")
    (set_attr "prefix" "orig,vex")
diff --git a/gcc/testsuite/gcc.target/i386/pr107934.c b/gcc/testsuite/gcc.target/i386/pr107934.c
new file mode 100644
index 00000000000..59106b29159
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr107934.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mtune=knl -ffinite-math-only -msse2" } */
+
+int
+foo (__bf16 bf)
+{
+  return bf;
+}
-- 
2.27.0