Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Analysis/BasicAA/intrinsics-arm.ll

@@ -0,0 +1,31 @@
+; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
+; REQUIRES: arm
+
+target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
+
+; BasicAA should prove that these calls don't interfere, since we've
+; specifically special cased exactly these two intrinsics in
+; MemoryLocation::getForArgument.
+
+; CHECK:      define <8 x i16> @test1(i8* %p, <8 x i16> %y) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT:   %q = getelementptr i8, i8* %p, i64 16
+; CHECK-NEXT:   %a = call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %p, i32 16) [[ATTR:#[0-9]+]]
+; CHECK-NEXT:   call void @llvm.arm.neon.vst1.p0i8.v8i16(i8* %q, <8 x i16> %y, i32 16)
+; CHECK-NEXT:   %c = add <8 x i16> %a, %a
+define <8 x i16> @test1(i8* %p, <8 x i16> %y) {
+entry:
+  %q = getelementptr i8, i8* %p, i64 16
+  %a = call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %p, i32 16) nounwind
+  call void @llvm.arm.neon.vst1.p0i8.v8i16(i8* %q, <8 x i16> %y, i32 16)
+  %b = call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %p, i32 16) nounwind
+  %c = add <8 x i16> %a, %b
+  ret <8 x i16> %c
+}
+
+declare <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8*, i32) nounwind readonly
+declare void @llvm.arm.neon.vst1.p0i8.v8i16(i8*, <8 x i16>, i32) nounwind
+
+; CHECK: attributes #0 = { argmemonly nounwind readonly }
+; CHECK: attributes #1 = { argmemonly nounwind }
+; CHECK: attributes [[ATTR]] = { nounwind }