From: liuhongt <hongtao.liu@intel.com>
Date: Tue, 11 Jun 2024 02:23:27 +0000 (+0800)
Subject: Fix ICE in rtl check due to CONST_WIDE_INT in CONST_VECTOR_DUPLICATE_P
X-Git-Tag: basepoints/gcc-16~8362
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d496d2cd1d5d8751a1637abca89339d6f9ddd3b;p=thirdparty%2Fgcc.git

Fix ICE in rtl check due to CONST_WIDE_INT in CONST_VECTOR_DUPLICATE_P

The patch add extra check to make sure the component of CONST_VECTOR
is CONST_INT_P.

gcc/ChangeLog:

	PR target/115384
	* simplify-rtx.cc (simplify_context::simplify_binary_operation_1):
	Only do the simplification of (AND (ASHIFTRT A imm) mask)
	to (LSHIFTRT A imm) when the component of const_vector is
	CONST_INT_P.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/pr115384.c: New test.
---

diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc
index 9bc3ef9ad9f..3ee95f74d3d 100644
--- a/gcc/simplify-rtx.cc
+++ b/gcc/simplify-rtx.cc
@@ -4072,9 +4072,11 @@ simplify_context::simplify_binary_operation_1 (rtx_code code,
       if (VECTOR_MODE_P (mode) && GET_CODE (op0) == ASHIFTRT
 	  && (CONST_INT_P (XEXP (op0, 1))
 	      || (GET_CODE (XEXP (op0, 1)) == CONST_VECTOR
-		  && CONST_VECTOR_DUPLICATE_P (XEXP (op0, 1))))
+		  && CONST_VECTOR_DUPLICATE_P (XEXP (op0, 1))
+		  && CONST_INT_P (XVECEXP (XEXP (op0, 1), 0, 0))))
 	  && GET_CODE (op1) == CONST_VECTOR
-	  && CONST_VECTOR_DUPLICATE_P (op1))
+	  && CONST_VECTOR_DUPLICATE_P (op1)
+	  && CONST_INT_P (XVECEXP (op1, 0, 0)))
 	{
 	  unsigned HOST_WIDE_INT shift_count
 	    = (CONST_INT_P (XEXP (op0, 1))
diff --git a/gcc/testsuite/gcc.target/i386/pr115384.c b/gcc/testsuite/gcc.target/i386/pr115384.c
new file mode 100644
index 00000000000..31dd6f4eb18
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr115384.c
@@ -0,0 +1,12 @@
+/* { dg-do compile { target int128 } } */
+/* { dg-options "-O" } */
+
+typedef __attribute__((__vector_size__(sizeof(__int128)))) __int128 W;
+
+W w;
+
+void
+foo()
+{
+  w = w >> 4 & 18446744073709551600llu;
+}