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https://github.com/c64scene-ar/llvm-6502.git
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a0885fb882
This patch migrates the strncpy optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167102 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
726 B
LLVM
23 lines
726 B
LLVM
; Test that the strncpy 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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@hello = constant [6 x i8] c"hello\00"
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@a = common global [32 x i8] zeroinitializer, align 1
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declare i16* @strncpy(i8*, i8*, i32)
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; Check that 'strncpy' functions with the wrong prototype aren't simplified.
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define void @test_no_simplify1() {
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; CHECK: @test_no_simplify1
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%dst = getelementptr [32 x i8]* @a, i32 0, i32 0
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%src = getelementptr [6 x i8]* @hello, i32 0, i32 0
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call i16* @strncpy(i8* %dst, i8* %src, i32 6)
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; CHECK: call i16* @strncpy
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ret void
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}
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