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llvm-mirror/test/Transforms/MemCpyOpt/memmove.ll

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Make BasicAliasAnalysis a normal AliasAnalysis implementation which does normal initialization and normal chaining. Change the default AliasAnalysis implementation to NoAlias. Update StandardCompileOpts.h and friends to explicitly request BasicAliasAnalysis. Update tests to explicitly request -basicaa. llvm-svn: 116720
2010-10-18 20:04:47 +02:00
; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
enhance memcpy opt to turn memmoves into memcpy when the src/dest don't alias. Remove an old and poorly reduced testcase that fails with this transform for reasons unrelated to the original test. llvm-svn: 80693
2009-09-01 19:56:32 +02:00
; 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"
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. llvm-svn: 133337
2011-06-18 08:05:24 +02:00
declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
enhance memcpy opt to turn memmoves into memcpy when the src/dest don't alias. Remove an old and poorly reduced testcase that fails with this transform for reasons unrelated to the original test. llvm-svn: 80693
2009-09-01 19:56:32 +02:00
define i8* @test1(i8* nocapture %src) nounwind {
entry:
; CHECK: @test1
; CHECK: call void @llvm.memcpy
manually upgrade a bunch of tests to modern syntax, and remove some that are either unreduced or only test old syntax. llvm-svn: 133228
2011-06-17 05:14:27 +02:00
%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]*
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. llvm-svn: 133337
2011-06-18 08:05:24 +02:00
%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)
enhance memcpy opt to turn memmoves into memcpy when the src/dest don't alias. Remove an old and poorly reduced testcase that fails with this transform for reasons unrelated to the original test. llvm-svn: 80693
2009-09-01 19:56:32 +02:00
ret i8* %call3.sub
}
manually upgrade a bunch of tests to modern syntax, and remove some that are either unreduced or only test old syntax. llvm-svn: 133228
2011-06-17 05:14:27 +02:00
declare noalias i8* @malloc(i32)
enhance memcpy opt to turn memmoves into memcpy when the src/dest don't alias. Remove an old and poorly reduced testcase that fails with this transform for reasons unrelated to the original test. llvm-svn: 80693
2009-09-01 19:56:32 +02:00
define void @test2(i8* %P) nounwind {
entry:
; CHECK: @test2
; CHECK: call void @llvm.memcpy
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. llvm-svn: 133337
2011-06-18 08:05:24 +02:00
%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)
enhance memcpy opt to turn memmoves into memcpy when the src/dest don't alias. Remove an old and poorly reduced testcase that fails with this transform for reasons unrelated to the original test. llvm-svn: 80693
2009-09-01 19:56:32 +02:00
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
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. llvm-svn: 133337
2011-06-18 08:05:24 +02:00
%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)
enhance memcpy opt to turn memmoves into memcpy when the src/dest don't alias. Remove an old and poorly reduced testcase that fails with this transform for reasons unrelated to the original test. llvm-svn: 80693
2009-09-01 19:56:32 +02:00
ret void
}
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