Return constm1_rtx when GET_MODE_CLASS (MODE) == MODE_VECTOR_INT.
Otherwise NULL_RTX.
Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}.
Ready push to trunk.
gcc/ChangeLog:
* config/i386/i386.h (VECTOR_STORE_FLAG_VALUE): New macro.
gcc/testsuite/ChangeLog:
* gcc.dg/rtl/x86_64/vector_eq.c: New test.
---
gcc/config/i386/i386.h | 5 +++-
gcc/testsuite/gcc.dg/rtl/x86_64/vector_eq.c | 26 +++++++++++++++++++++
2 files changed, 30 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.dg/rtl/x86_64/vector_eq.c
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index c1ec92ffb15..b12be41424f 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -899,7 +899,10 @@ extern const char *host_detect_local_cpu (int argc, const
char **argv);
and give entire struct the alignment of an int. */
/* Required on the 386 since it doesn't have bit-field insns. */
#define PCC_BITFIELD_TYPE_MATTERS 1
-
+
+#define VECTOR_STORE_FLAG_VALUE(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT ? constm1_rtx : NULL_RTX)
+
/* Standard register usage. */
/* This processor has special stack-like registers. See reg-stack.cc
diff --git a/gcc/testsuite/gcc.dg/rtl/x86_64/vector_eq.c
b/gcc/testsuite/gcc.dg/rtl/x86_64/vector_eq.c
new file mode 100644
index 00000000000..b82603d0b64
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/rtl/x86_64/vector_eq.c
@@ -0,0 +1,26 @@
+/* { dg-do compile { target x86_64-*-* } } */
+/* { dg-additional-options "-O2 -march=x86-64-v3" } */
+
+typedef int v4si __attribute__((vector_size(16)));
+
+v4si __RTL (startwith ("vregs")) foo (void)
+{
+(function "foo"
+ (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 0)
(const_int 0) (const_int 0) (const_int 0)])))
+ (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)))
+)
+}
+
+/* { dg-final { scan-assembler-not "vpxor" } } */
--
2.31.1
