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mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-15 20:29:48 +00:00
llvm-6502/test/Transforms/MemCpyOpt/memmove.ll
Chris Lattner b85e4eba85 rip out a ton of intrinsic modernization logic from AutoUpgrade.cpp, which is
for pre-2.9 bitcode files.  We keep x86 unaligned loads, movnt, crc32, and the
target indep prefetch change.

As usual, updating the testsuite is a PITA.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133337 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18 06:05:24 +00:00

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1.4 KiB
LLVM

; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
; These memmoves should get optimized to memcpys.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-apple-darwin9.0"
declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
define i8* @test1(i8* nocapture %src) nounwind {
entry:
; CHECK: @test1
; CHECK: call void @llvm.memcpy
%malloccall = tail call i8* @malloc(i32 trunc (i64 mul nuw (i64 ptrtoint (i8* getelementptr (i8* null, i32 1) to i64), i64 13) to i32))
%call3 = bitcast i8* %malloccall to [13 x i8]*
%call3.sub = getelementptr inbounds [13 x i8]* %call3, i64 0, i64 0
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %call3.sub, i8* %src, i64 13, i32 1, i1 false)
ret i8* %call3.sub
}
declare noalias i8* @malloc(i32)
define void @test2(i8* %P) nounwind {
entry:
; CHECK: @test2
; CHECK: call void @llvm.memcpy
%add.ptr = getelementptr i8* %P, i64 16
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %add.ptr, i64 16, i32 1, i1 false)
ret void
}
; This cannot be optimize because the src/dst really do overlap.
define void @test3(i8* %P) nounwind {
entry:
; CHECK: @test3
; CHECK: call void @llvm.memmove
%add.ptr = getelementptr i8* %P, i64 16
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %P, i8* %add.ptr, i64 17, i32 1, i1 false)
ret void
}