Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/rewrite-memfuncs-no-store.ll

+; RUN: opt < %s -rewrite-pnacl-library-calls -S | FileCheck %s
+; RUN: opt < %s -rewrite-pnacl-library-calls -S | FileCheck %s -check-prefix=CLEANED
+
+declare i8* @memcpy(i8*, i8*, i32)
+declare i8* @memmove(i8*, i8*, i32)
+declare i8* @memset(i8*, i32, i32)
+
+; No declaration or definition of the library functions should remain, since
+; the only uses of mem* functions are calls.
+; CLEANED-NOT: @memcpy
+; CLEANED-NOT: @memmove
+; CLEANED-NOT: @memset
+
+define i8* @call_memcpy(i8* %dest, i8* %src, i32 %len) {
+  %result = call i8* @memcpy(i8* %dest, i8* %src, i32 %len)
+  ret i8* %result
+; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i32 1, i1 false)
+; CHECK: ret i8* %dest
+}
+
+define i8* @call_memmove(i8* %dest, i8* %src, i32 %len) {
+  %result = call i8* @memmove(i8* %dest, i8* %src, i32 %len)
+  ret i8* %result
+; CHECK: call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i32 1, i1 false)
+; CHECK: ret i8* %dest
+}
+
+define i8* @call_memset(i8* %dest, i32 %c, i32 %len) {
+  %result = call i8* @memset(i8* %dest, i32 %c, i32 %len)
+  ret i8* %result
+; CHECK: %trunc_byte = trunc i32 %c to i8
+; CHECK: call void @llvm.memset.p0i8.i32(i8* %dest, i8 %trunc_byte, i32 %len, i32 1, i1 false)
+; CHECK: ret i8* %dest
+}