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llvm-svn: 186268
18 lines
589 B
LLVM
18 lines
589 B
LLVM
; Test that the memcpy library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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declare i8* @memcpy(i8*, i8*, i32)
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; Check memcpy(mem1, mem2, size) -> llvm.memcpy(mem1, mem2, size, 1).
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define i8* @test_simplify1(i8* %mem1, i8* %mem2, i32 %size) {
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; CHECK-LABEL: @test_simplify1(
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%ret = call i8* @memcpy(i8* %mem1, i8* %mem2, i32 %size)
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; CHECK: call void @llvm.memcpy
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ret i8* %ret
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; CHECK: ret i8* %mem1
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}
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