test/CodeGen/X86/pr42064.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -verify-machineinstrs -mtriple=x86_64-pc-windows-msvc19.11.0 -mattr=+avx,+cx16 | FileCheck %s

%struct.TestStruct = type { %union.Int128 }
%union.Int128 = type { i128 }
%struct.SomeArrays = type { %struct.SillyArray, %struct.SillyArray, %struct.SillyArray }
%struct.SillyArray = type { i8*, i32, i32 }

declare void @llvm.lifetime.start.p0i8(i64, i8*)

define void @foo(%struct.TestStruct* %arg) align 2 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
; Check that %rbx is being used for a frame pointer
; CHECK-LABEL: foo:
; CHECK:         movq %rsp, %rbx

; Check that %rbx is saved and restored around both lock cmpxchg16b.
; CHECK:         movq %rbx, %r9
; CHECK-NEXT:    movabsq $1393743441367457520, %rcx # imm = 0x135792468ABCDEF0
; CHECK-NEXT:    movq %rcx, %rax
; CHECK-NEXT:    movq %rcx, %rdx
; CHECK-NEXT:    movq %rcx, %rbx
; CHECK-NEXT:    lock cmpxchg16b (%r8)
; CHECK-NEXT:    movq %r9, %rbx

; CHECK:         movq %rbx, %r9
; CHECK-NEXT:    movq %rcx, %rax
; CHECK-NEXT:    movq %rcx, %rdx
; CHECK-NEXT:    movq %rcx, %rbx
; CHECK-NEXT:    lock cmpxchg16b (%r8)
; CHECK-NEXT:    movq %r9, %rbx
bb:
  %i = alloca %struct.SomeArrays, align 8
  %i1 = alloca %struct.SomeArrays, align 8
  %i2 = getelementptr inbounds %struct.TestStruct, %struct.TestStruct* %arg, i64 0, i32 0, i32 0
  %i3 = cmpxchg i128* %i2, i128 25710028567316702934644703134494809840, i128 25710028567316702934644703134494809840 seq_cst seq_cst
  %i4 = extractvalue { i128, i1 } %i3, 0
  %i5 = trunc i128 %i4 to i64
  %i6 = icmp eq i64 %i5, 0
  br i1 %i6, label %bb9, label %bb7

bb7:                                              ; preds = %bb
  %i8 = cmpxchg i128* %i2, i128 25710028567316702934644703134494809840, i128 25710028567316702934644703134494809840 seq_cst seq_cst
  br label %bb9

bb9:                                              ; preds = %bb7, %bb
  %i10 = bitcast %struct.SomeArrays* %i to i8*
  call void @llvm.lifetime.start.p0i8(i64 48, i8* nonnull %i10)
  call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(48) %i10, i8 0, i64 48, i1 false)
  %i11 = bitcast %struct.SomeArrays* %i1 to i8*
  call void @llvm.lifetime.start.p0i8(i64 48, i8* nonnull %i11)
  %i12 = bitcast %struct.SomeArrays* %i1 to i8*
  call void @llvm.memset.p0i8.i64(i8* nonnull align 8 dereferenceable(48) %i12, i8 0, i64 48, i1 false)
  %i13 = invoke nonnull align 8 dereferenceable(48) %struct.SomeArrays* @"??4SomeArrays@@QEAAAEAU0@$$QEAU0@@Z"(%struct.SomeArrays* nonnull %i, %struct.SomeArrays* nonnull align 8 dereferenceable(48) %i1)
          to label %bb14 unwind label %bb45

bb14:                                             ; preds = %bb9
  call void @llvm.lifetime.end.p0i8(i64 48, i8* nonnull %i10)
  ret void

bb45:                                             ; preds = %bb9
  %i46 = cleanuppad within none []
  %i47 = getelementptr inbounds %struct.SomeArrays, %struct.SomeArrays* %i1, i64 0, i32 2, i32 0
  %i48 = load i8*, i8** %i47, align 8
  invoke void @"?free@@YAXPEAX@Z"(i8* %i48) [ "funclet"(token %i46) ]
          to label %bb51 unwind label %bb49

bb49:                                             ; preds = %bb45
  %i50 = cleanuppad within %i46 []
  call void @__std_terminate() [ "funclet"(token %i50) ]
  unreachable

bb51:                                             ; preds = %bb45
  %i52 = getelementptr inbounds %struct.SomeArrays, %struct.SomeArrays* %i1, i64 0, i32 1, i32 0
  %i53 = load i8*, i8** %i52, align 8
  invoke void @"?free@@YAXPEAX@Z"(i8* %i53) [ "funclet"(token %i46) ]
          to label %bb56 unwind label %bb54

bb54:                                             ; preds = %bb51
  %i55 = cleanuppad within %i46 []
  call void @__std_terminate() [ "funclet"(token %i55) ]
  unreachable

bb56:                                             ; preds = %bb51
  call void @llvm.lifetime.end.p0i8(i64 48, i8* nonnull %i10)
  cleanupret from %i46 unwind to caller
}

declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)

declare void @llvm.memset.p0i8.i64(i8*, i8, i64, i1)

declare dso_local i32 @__CxxFrameHandler3(...)

declare nonnull align 8 dereferenceable(48) %struct.SomeArrays* @"??4SomeArrays@@QEAAAEAU0@$$QEAU0@@Z"(%struct.SomeArrays*, %struct.SomeArrays* nonnull align 8 dereferenceable(48)) align 2

declare void @"?free@@YAXPEAX@Z"(i8*)

declare void @__std_terminate()