Imported Upstream version 5.18.0.182

Former-commit-id: f9d55cf82631bfd710c387739687e5845296aea1

external/llvm/test/CodeGen/X86/TruncAssertSext.ll

@@ -1,20 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -O2 -mtriple=x86_64-unknown-unknown | FileCheck %s
-; Checks that a zeroing mov is inserted for the trunc/zext pair even when
-; the source of the zext is an AssertSext node
-; PR20494
-
-define i64 @main(i64 %a) {
-; CHECK-LABEL: main:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    orq $-2, %rdi
-; CHECK-NEXT:    movl %edi, %eax
-; CHECK-NEXT:    retq
-  %or = or i64 %a, -2
-  %trunc = trunc i64 %or to i32
-  br label %l
-l:
-  %ext = zext i32 %trunc to i64
-  trunc i64 %or to i32 ; to keep the or from being narrowed
-  ret i64 %ext
-}