Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

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

@@ -1,41 +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 AssertZext node
-; PR28540
-
-define i64 @foo() {
-; CHECK-LABEL: foo:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    movq $-1, %rax
-; CHECK-NEXT:    retq
-  ret i64 -1
-}
-
-define i64 @main() {
-; CHECK-LABEL: main:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    pushq %rax
-; CHECK-NEXT:    .cfi_def_cfa_offset 16
-; CHECK-NEXT:    callq foo
-; CHECK-NEXT:    movabsq $-4294967041, %rcx # imm = 0xFFFFFFFF000000FF
-; CHECK-NEXT:    andq %rax, %rcx
-; CHECK-NEXT:    movl %ecx, %ecx
-; CHECK-NEXT:    leaq (,%rcx,8), %rax
-; CHECK-NEXT:    subq %rcx, %rax
-; CHECK-NEXT:    shrq $32, %rax
-; CHECK-NEXT:    popq %rcx
-; CHECK-NEXT:    retq
-  %b = call i64 @foo()
-  %or = and i64 %b, 18446744069414584575 ; this is 0xffffffff000000ff
-  %trunc = trunc i64 %or to i32
-  br label %l
-l:
-  %ext = zext i32 %trunc to i64
-  %mul = mul i64 %ext, 7
-  br label %m
-m: ; keeps dag combine from seeing the multiply and the shift together
-  %shr = lshr i64 %mul, 32
-  trunc i64 %or to i32 ; keeps the and alive so it doesn't simplify
-  ret i64 %shr
-}