Update llvm to r84119.

1 files changed, 37 insertions, 0 deletions

diff --git a/test/Transforms/MemCpyOpt/memmove.ll b/test/Transforms/MemCpyOpt/memmove.ll
new file mode 100644
index 0000000..73bbf0b
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/memmove.ll
@@ -0,0 +1,37 @@
+; RUN: opt < %s -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.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
+
+define i8* @test1(i8* nocapture %src) nounwind {
+entry:
+; CHECK: @test1
+; CHECK: call void @llvm.memcpy
+
+  %call3 = malloc [13 x i8]                       ; <[13 x i8]*> [#uses=1]
+  %call3.sub = getelementptr inbounds [13 x i8]* %call3, i64 0, i64 0 ; <i8*> [#uses=2]
+  tail call void @llvm.memmove.i64(i8* %call3.sub, i8* %src, i64 13, i32 1)
+  ret i8* %call3.sub
+}
+
+define void @test2(i8* %P) nounwind {
+entry:
+; CHECK: @test2
+; CHECK: call void @llvm.memcpy
+  %add.ptr = getelementptr i8* %P, i64 16         ; <i8*> [#uses=1]
+  tail call void @llvm.memmove.i64(i8* %P, i8* %add.ptr, i64 16, i32 1)
+  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         ; <i8*> [#uses=1]
+  tail call void @llvm.memmove.i64(i8* %P, i8* %add.ptr, i64 17, i32 1)
+  ret void
+}