derek.holloway
7502bf64a4
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36 lines
1.4 KiB
LLVM
36 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=memcpyopt -S < %s -verify-memoryssa | FileCheck %s
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; rdar://8875553
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; Memcpyopt shouldn't optimize the second memcpy using the first
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; because the first has a smaller size.
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target datalayout = "e-p:32:32:32"
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%struct.s = type { [11 x i8], i32 }
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@.str = private constant [11 x i8] c"0123456789\00"
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@cell = external global %struct.s
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declare void @check(ptr byval(%struct.s) %p) nounwind
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declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
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define void @foo() nounwind {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[AGG_TMP:%.*]] = alloca [[STRUCT_S:%.*]], align 4
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; CHECK-NEXT: store i32 99, ptr getelementptr inbounds ([[STRUCT_S]], ptr @cell, i32 0, i32 1), align 4
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 @cell, ptr align 1 @.str, i32 11, i1 false)
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[AGG_TMP]], ptr align 4 @cell, i32 16, i1 false)
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; CHECK-NEXT: call void @check(ptr [[AGG_TMP]])
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; CHECK-NEXT: ret void
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;
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entry:
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%agg.tmp = alloca %struct.s, align 4
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store i32 99, ptr getelementptr inbounds (%struct.s, ptr @cell, i32 0, i32 1), align 4
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call void @llvm.memcpy.p0.p0.i32(ptr align 1 @cell, ptr align 1 @.str, i32 11, i1 false)
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call void @llvm.memcpy.p0.p0.i32(ptr align 4 %agg.tmp, ptr align 4 @cell, i32 16, i1 false)
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call void @check(ptr %agg.tmp)
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ret void
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}
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