Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/CodeGen/AArch64/bitcast.ll

@@ -1,27 +0,0 @@
-; RUN: llc < %s -mtriple=aarch64--linux-gnu | FileCheck %s
-
-; PR23065: SCALAR_TO_VECTOR implies the top elements 1 to N-1 of the N-element vector are undefined.
-
-define <4 x i16> @foo1(<2 x i32> %a) {
-; CHECK-LABEL: foo1:
-; CHECK:       movi	d0, #0000000000000000
-; CHECK-NEXT:  ret
-
-  %1 = shufflevector <2 x i32> <i32 58712, i32 undef>, <2 x i32> %a, <2 x i32> <i32 0, i32 2>
-; Can't optimize the following bitcast to scalar_to_vector.
-  %2 = bitcast <2 x i32> %1 to <4 x i16>
-  %3 = shufflevector <4 x i16> %2, <4 x i16> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-  ret <4 x i16> %3
-}
-
-define <4 x i16> @foo2(<2 x i32> %a) {
-; CHECK-LABEL: foo2:
-; CHECK:       movi	d0, #0000000000000000
-; CHECK-NEXT:  ret
-
-  %1 = shufflevector <2 x i32> <i32 712, i32 undef>, <2 x i32> %a, <2 x i32> <i32 0, i32 2>
-; Can't optimize the following bitcast to scalar_to_vector.
-  %2 = bitcast <2 x i32> %1 to <4 x i16>
-  %3 = shufflevector <4 x i16> %2, <4 x i16> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-  ret <4 x i16> %3
-}