From: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Wed, 14 Jun 2023 16:08:03 +0000 (+0100)
Subject: aarch64: Fix -Werror=sign-compare bootstrap failure
X-Git-Tag: basepoints/gcc-15~8316
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5eeff09a74391add05f609761bdc62c98476017a;p=thirdparty%2Fgcc.git

aarch64: Fix -Werror=sign-compare bootstrap failure

Pushing to fix bootstrap.

gcc/ChangeLog:

	* config/aarch64/aarch64-sve-builtins-base.cc (svlast_impl::fold):
	Fix signed comparison warning in loop from npats to enelts.
---

diff --git a/gcc/config/aarch64/aarch64-sve-builtins-base.cc b/gcc/config/aarch64/aarch64-sve-builtins-base.cc
index 9b766ffa8170..95b4cb8a9433 100644
--- a/gcc/config/aarch64/aarch64-sve-builtins-base.cc
+++ b/gcc/config/aarch64/aarch64-sve-builtins-base.cc
@@ -1088,7 +1088,7 @@ public:
 	int step = f.type_suffix (0).element_bytes;
 	int step_1 = gcd (step, VECTOR_CST_NPATTERNS (pred));
 	int npats = VECTOR_CST_NPATTERNS (pred);
-	unsigned HOST_WIDE_INT enelts = vector_cst_encoded_nelts (pred);
+	unsigned enelts = vector_cst_encoded_nelts (pred);
 	tree b = NULL_TREE;
 	unsigned HOST_WIDE_INT nelts;
 
@@ -1130,13 +1130,13 @@ public:
 		/* Restrict the scope of search to NPATS if vector is
 		   variable-length for linear search later.  */
 		nelts = npats;
-		for (i = npats; i < enelts; i += step_1)
+		for (unsigned j = npats; j < enelts; j += step_1)
 		  {
 		    /* If there are active elements in the repeated pattern of a
 		       variable-length vector, then return NULL as there is no
 		       way to be sure statically if this falls within the
 		       Advanced SIMD range.  */
-		    if (!integer_zerop (VECTOR_CST_ENCODED_ELT (pred, i)))
+		    if (!integer_zerop (VECTOR_CST_ENCODED_ELT (pred, j)))
 		      return NULL;
 		  }
 	      }