138 lines
6.0 KiB
LLVM
138 lines
6.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s
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; performCallSlotOptzn in MemCpy should not exchange the calls to
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; @llvm.lifetime.start and @llvm.memcpy.
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declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1)
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declare void @llvm.lifetime.start.p0(i64, ptr nocapture)
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declare void @llvm.lifetime.end.p0(i64, ptr nocapture)
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define void @call_slot(ptr nocapture dereferenceable(16) %arg1) {
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; CHECK-LABEL: @call_slot(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[TMP:%.*]] = alloca [8 x i8], align 8
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 16, ptr [[TMP]])
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; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[TMP]], i64 7
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; CHECK-NEXT: store i8 0, ptr [[TMP10]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 16, ptr [[TMP]])
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; CHECK-NEXT: ret void
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;
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bb:
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%tmp = alloca [8 x i8], align 8
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call void @llvm.lifetime.start.p0(i64 16, ptr %tmp)
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%tmp10 = getelementptr inbounds i8, ptr %tmp, i64 7
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store i8 0, ptr %tmp10, align 1
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call void @llvm.memcpy.p0.p0.i64(ptr align 8 %arg1, ptr align 8 %tmp, i64 16, i1 false)
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call void @llvm.lifetime.end.p0(i64 16, ptr %tmp)
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ret void
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}
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define void @memcpy_memcpy_across_lifetime(ptr noalias %p1, ptr noalias %p2, ptr noalias %p3) {
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; CHECK-LABEL: @memcpy_memcpy_across_lifetime(
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; CHECK-NEXT: [[A:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 16, ptr [[A]])
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[A]], ptr [[P1:%.*]], i64 16, i1 false)
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[P1]], ptr [[P2:%.*]], i64 16, i1 false)
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[P2]], ptr [[A]], i64 16, i1 false)
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 16, ptr [[A]])
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[P3:%.*]], ptr [[P2]], i64 16, i1 false)
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; CHECK-NEXT: ret void
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;
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%a = alloca [16 x i8]
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call void @llvm.lifetime.start.p0(i64 16, ptr %a)
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call void @llvm.memcpy.p0.p0.i64(ptr %a, ptr %p1, i64 16, i1 false)
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call void @llvm.memcpy.p0.p0.i64(ptr %p1, ptr %p2, i64 16, i1 false)
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call void @llvm.memcpy.p0.p0.i64(ptr %p2, ptr %a, i64 16, i1 false)
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call void @llvm.lifetime.end.p0(i64 16, ptr %a)
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call void @llvm.memcpy.p0.p0.i64(ptr %p3, ptr %p2, i64 16, i1 false)
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ret void
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}
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declare void @call(ptr)
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define i32 @call_slot_move_lifetime_start() {
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; CHECK-LABEL: @call_slot_move_lifetime_start(
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; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[DST:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: call void @call(ptr [[DST]])
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[DST]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%tmp = alloca i32
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%dst = alloca i32
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call void @call(ptr %tmp)
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call void @llvm.lifetime.start.p0(i64 4, ptr %dst)
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %dst, ptr align 4 %tmp, i64 4, i1 false)
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call void @llvm.lifetime.end.p0(i64 4, ptr %dst)
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%v = load i32, ptr %dst
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ret i32 %v
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}
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define i32 @call_slot_two_lifetime_starts() {
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; CHECK-LABEL: @call_slot_two_lifetime_starts(
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; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[DST:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @call(ptr [[TMP]])
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[DST]], ptr align 4 [[TMP]], i64 4, i1 false)
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[DST]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%tmp = alloca i32
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%dst = alloca i32
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call void @call(ptr %tmp)
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call void @llvm.lifetime.start.p0(i64 4, ptr %dst)
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call void @llvm.lifetime.start.p0(i64 4, ptr %dst)
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %dst, ptr align 4 %tmp, i64 4, i1 false)
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call void @llvm.lifetime.end.p0(i64 4, ptr %dst)
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%v = load i32, ptr %dst
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ret i32 %v
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}
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define i32 @call_slot_clobber_before_lifetime_start() {
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; CHECK-LABEL: @call_slot_clobber_before_lifetime_start(
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; CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[DST:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @call(ptr [[TMP]])
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; CHECK-NEXT: store i32 0, ptr [[DST]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[DST]], ptr align 4 [[TMP]], i64 4, i1 false)
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr [[DST]])
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; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[DST]], align 4
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; CHECK-NEXT: ret i32 [[V]]
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;
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%tmp = alloca i32
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%dst = alloca i32
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call void @call(ptr %tmp)
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store i32 0, ptr %dst
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call void @llvm.lifetime.start.p0(i64 4, ptr %dst)
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %dst, ptr align 4 %tmp, i64 4, i1 false)
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call void @llvm.lifetime.end.p0(i64 4, ptr %dst)
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%v = load i32, ptr %dst
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ret i32 %v
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}
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define void @call_slot_lifetime_bitcast(ptr %ptr) {
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; CHECK-LABEL: @call_slot_lifetime_bitcast(
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; CHECK-NEXT: [[TMP1:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[TMP2:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[TMP2]], ptr align 4 [[PTR:%.*]], i64 4, i1 false)
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; CHECK-NEXT: [[TMP1_CAST:%.*]] = bitcast ptr [[TMP1]] to ptr
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr nonnull [[TMP1_CAST]])
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[TMP1_CAST]], ptr align 4 [[PTR]], i64 4, i1 false)
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; CHECK-NEXT: ret void
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;
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%tmp1 = alloca i32
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%tmp2 = alloca i32
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call void @llvm.memcpy.p0.p0.i64(ptr align 8 %tmp2, ptr align 4 %ptr, i64 4, i1 false)
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%tmp1.cast = bitcast ptr %tmp1 to ptr
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call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %tmp1.cast)
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %tmp1.cast, ptr align 4 %tmp2, i64 4, i1 false)
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ret void
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}
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