Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/test/CodeGen/AArch64/arm64-dagcombiner-dead-indexed-load.ll

@@ -1,28 +0,0 @@
-; RUN: llc -mcpu=cyclone < %s | FileCheck %s
-target datalayout = "e-i64:64-n32:64-S128"
-target triple = "arm64-apple-ios"
-
-%"struct.SU" = type { i32, %"struct.SU"*, i32*, i32, i32, %"struct.BO", i32, [5 x i8] }
-%"struct.BO" = type { %"struct.RE" }
-
-%"struct.RE" = type { i32, i32, i32, i32 }
-
-; This is a read-modify-write of some bifields combined into an i48.  It gets
-; legalized into i32 and i16 accesses.  Only a single store of zero to the low
-; i32 part should be live.
-
-; CHECK-LABEL: test:
-; CHECK-NOT: ldr
-; CHECK: str wzr
-; CHECK-NOT: str
-define void @test(%"struct.SU"* nocapture %su) {
-entry:
-  %r1 = getelementptr inbounds %"struct.SU", %"struct.SU"* %su, i64 1, i32 5
-  %r2 = bitcast %"struct.BO"* %r1 to i48*
-  %r3 = load i48, i48* %r2, align 8
-  %r4 = and i48 %r3, -4294967296
-  %r5 = or i48 0, %r4
-  store i48 %r5, i48* %r2, align 8
-
-  ret void
-}