llvm/llvm/test/Instrumentation/DataFlowSanitizer/origin_mem_intrinsic.ll

; RUN: opt < %s -passes=dfsan -dfsan-track-origins=1  -S | FileCheck %s
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-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

declare void @llvm.memcpy.p0.p0.i32(ptr, ptr, i32, i1)
declare void @llvm.memmove.p0.p0.i32(ptr, ptr, i32, i1)
declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1)

define void @memcpy(ptr %d, ptr %s, i32 %l) {
  ; CHECK: @memcpy.dfsan
  ; CHECK: [[L64:%.*]] = zext i32 %l to i64
  ; CHECK: call void @__dfsan_mem_origin_transfer(ptr %d, ptr %s, i64 [[L64]])
  ; CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 1 {{.*}}, ptr align 1 {{.*}}, i32 {{.*}}, i1 false)
  ; CHECK: call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 %l, i1 false)

  call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 %l, i1 0)
  ret void
}

define void @memmove(ptr %d, ptr %s, i32 %l) {
  ; CHECK: @memmove.dfsan
  ; CHECK: [[L64:%.*]] = zext i32 %l to i64
  ; CHECK: call void @__dfsan_mem_origin_transfer(ptr %d, ptr %s, i64 [[L64]])
  ; CHECK: call void @llvm.memmove.p0.p0.i32(ptr align 1 {{.*}}, ptr align 1 {{.*}}, i32 {{.*}}, i1 false)
  ; CHECK: call void @llvm.memmove.p0.p0.i32(ptr %d, ptr %s, i32 %l, i1 false)

  call void @llvm.memmove.p0.p0.i32(ptr %d, ptr %s, i32 %l, i1 0)
  ret void
}

define void @memset(ptr %p, i8 %v) {
  ; CHECK: @memset.dfsan
  ; CHECK: [[O:%.*]] = load i32, ptr getelementptr inbounds ([200 x i32], ptr @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
  ; CHECK: [[S:%.*]] = load i8, ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN:2]]
  ; CHECK: call void @__dfsan_set_label(i8 [[S]], i32 [[O]], ptr %p, i64 1)
  call void @llvm.memset.p0.i64(ptr %p, i8 %v, i64 1, i1 1)
  ret void
}