x86: Add tests for PR target/117863

commit 546f28f83ceba74dc8bf84b0435c0159ffca971a
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Mon Apr 7 08:03:46 2025 +0100

    simplify-rtx: Fix shortcut for vector eq/ne

fixed

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117863

	PR target/117863
	* gcc.dg/rtl/i386/vector_eq-2.c: New test.
	* gcc.dg/rtl/i386/vector_eq-3.c: Likewise.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

2 files changed, 145 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/rtl/i386/vector_eq-2.c b/gcc/testsuite/gcc.dg/rtl/i386/vector_eq-2.c
new file mode 100644
index 0000000..871d489
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/rtl/i386/vector_eq-2.c
@@ -0,0 +1,71 @@
+/* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
+/* { dg-additional-options "-O2 -march=x86-64-v3" } */
+
+typedef int v4si __attribute__((vector_size(16)));
+typedef int v8si __attribute__((vector_size(32)));
+typedef int v2di __attribute__((vector_size(16)));
+
+v4si __RTL (startwith ("vregs1")) foo1 (void)
+{
+(function "foo1"
+  (insn-chain
+    (block 2
+      (edge-from entry (flags "FALLTHRU"))
+      (cnote 1 [bb 2] NOTE_INSN_BASIC_BLOCK)
+      (cnote 2 NOTE_INSN_FUNCTION_BEG)
+      (cinsn 3 (set (reg:V4SI <0>) (const_vector:V4SI [(const_int -1) (const_int -1) (const_int -1) (const_int -1)])))
+      (cinsn 4 (set (reg:V4SI <1>) (const_vector:V4SI [(const_int -1) (const_int -1) (const_int -1) (const_int -1)])))
+      (cinsn 5 (set (reg:V4SI <2>)
+		    (eq:V4SI (reg:V4SI <0>) (reg:V4SI <1>))))
+      (cinsn 6 (set (reg:V4SI <3>) (reg:V4SI <2>)))
+      (cinsn 7 (set (reg:V4SI xmm0) (reg:V4SI <3>)))
+      (edge-to exit (flags "FALLTHRU"))
+    )
+  )
+ (crtl (return_rtx (reg/i:V4SI xmm0)))
+)
+}
+
+v8si __RTL (startwith ("vregs1")) foo2 (void)
+{
+(function "foo2"
+  (insn-chain
+    (block 2
+      (edge-from entry (flags "FALLTHRU"))
+      (cnote 1 [bb 2] NOTE_INSN_BASIC_BLOCK)
+      (cnote 2 NOTE_INSN_FUNCTION_BEG)
+      (cinsn 3 (set (reg:V8SI <0>) (const_vector:V8SI [(const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1)])))
+      (cinsn 4 (set (reg:V8SI <1>) (const_vector:V8SI [(const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1) (const_int -1)])))
+      (cinsn 5 (set (reg:V8SI <2>)
+		    (eq:V8SI (reg:V8SI <0>) (reg:V8SI <1>))))
+      (cinsn 6 (set (reg:V8SI <3>) (reg:V8SI <2>)))
+      (cinsn 7 (set (reg:V8SI xmm0) (reg:V8SI <3>)))
+      (edge-to exit (flags "FALLTHRU"))
+    )
+  )
+ (crtl (return_rtx (reg/i:V8SI xmm0)))
+)
+}
+
+v2di __RTL (startwith ("vregs1")) foo3 (void)
+{
+(function "foo3"
+  (insn-chain
+    (block 2
+      (edge-from entry (flags "FALLTHRU"))
+      (cnote 1 [bb 2] NOTE_INSN_BASIC_BLOCK)
+      (cnote 2 NOTE_INSN_FUNCTION_BEG)
+      (cinsn 3 (set (reg:V2DI <0>) (const_vector:V2DI [(const_int -1) (const_int -1)])))
+      (cinsn 4 (set (reg:V2DI <1>) (const_vector:V2DI [(const_int -1) (const_int -1)])))
+      (cinsn 5 (set (reg:V2DI <2>)
+		    (eq:V2DI (reg:V2DI <0>) (reg:V2DI <1>))))
+      (cinsn 6 (set (reg:V2DI <3>) (reg:V2DI <2>)))
+      (cinsn 7 (set (reg:V2DI xmm0) (reg:V2DI <3>)))
+      (edge-to exit (flags "FALLTHRU"))
+    )
+  )
+ (crtl (return_rtx (reg/i:V2DI xmm0)))
+)
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeq" 3 } } */
diff --git a/gcc/testsuite/gcc.dg/rtl/i386/vector_eq-3.c b/gcc/testsuite/gcc.dg/rtl/i386/vector_eq-3.c
new file mode 100644
index 0000000..276c4c2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/rtl/i386/vector_eq-3.c
@@ -0,0 +1,74 @@
+/* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
+/* { dg-additional-options "-O2 -march=x86-64-v3" } */
+
+typedef int v4si __attribute__((vector_size(16)));
+typedef int v8si __attribute__((vector_size(32)));
+typedef int v2di __attribute__((vector_size(16)));
+
+v4si __RTL (startwith ("vregs1")) foo1 (void)
+{
+(function "foo1"
+  (insn-chain
+    (block 2
+      (edge-from entry (flags "FALLTHRU"))
+      (cnote 1 [bb 2] NOTE_INSN_BASIC_BLOCK)
+      (cnote 2 NOTE_INSN_FUNCTION_BEG)
+      (cinsn 3 (set (reg:V4SI <1>)
+		    (mem:V4SI (reg:SI di) [0 ptr S128 A128])))
+      (cinsn 4 (set (reg:V4SI <2>)
+		    (eq:V4SI (reg:V4SI <1>)
+			     (mem:V4SI (reg:SI di) [0 ptr S128 A128]))))
+      (cinsn 5 (set (reg:V4SI <3>) (reg:V4SI <2>)))
+      (cinsn 6 (set (reg:V4SI xmm0) (reg:V4SI <3>)))
+      (edge-to exit (flags "FALLTHRU"))
+    )
+  )
+ (crtl (return_rtx (reg/i:V4SI xmm0)))
+)
+}
+
+v8si __RTL (startwith ("vregs1")) foo2 (void)
+{
+(function "foo2"
+  (insn-chain
+    (block 2
+      (edge-from entry (flags "FALLTHRU"))
+      (cnote 1 [bb 2] NOTE_INSN_BASIC_BLOCK)
+      (cnote 2 NOTE_INSN_FUNCTION_BEG)
+      (cinsn 3 (set (reg:V8SI <1>)
+		    (mem:V8SI (reg:SI di) [0 ptr S256 A256])))
+      (cinsn 4 (set (reg:V8SI <2>)
+		    (eq:V8SI (mem:V8SI (reg:SI di) [0 ptr S256 A256])
+			     (reg:V8SI <1>))))
+      (cinsn 5 (set (reg:V8SI <3>) (reg:V8SI <2>)))
+      (cinsn 6 (set (reg:V8SI xmm0) (reg:V8SI <3>)))
+      (edge-to exit (flags "FALLTHRU"))
+    )
+  )
+ (crtl (return_rtx (reg/i:V8SI xmm0)))
+)
+}
+
+v2di __RTL (startwith ("vregs1")) foo3 (void)
+{
+(function "foo3"
+  (insn-chain
+    (block 2
+      (edge-from entry (flags "FALLTHRU"))
+      (cnote 1 [bb 2] NOTE_INSN_BASIC_BLOCK)
+      (cnote 2 NOTE_INSN_FUNCTION_BEG)
+      (cinsn 3 (set (reg:V2DI <1>)
+		    (mem:V2DI (reg:SI di) [0 ptr S128 A128])))
+      (cinsn 4 (set (reg:V2DI <2>)
+		    (eq:V2DI (reg:V2DI <1>)
+			     (mem:V2DI (reg:SI di) [0 ptr S128 A128]))))
+      (cinsn 5 (set (reg:V2DI <3>) (reg:V2DI <2>)))
+      (cinsn 6 (set (reg:V2DI xmm0) (reg:V2DI <3>)))
+      (edge-to exit (flags "FALLTHRU"))
+    )
+  )
+ (crtl (return_rtx (reg/i:V2DI xmm0)))
+)
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeq" 3 } } */