| ; Test that -dfsan-fast-16-labels mode uses inline ORs rather than calling |
| ; __dfsan_union or __dfsan_union_load. |
| ; RUN: opt < %s -dfsan -dfsan-fast-16-labels -S | FileCheck %s --implicit-check-not="call{{.*}}__dfsan_union" |
| 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" |
| |
| define i8 @add(i8 %a, i8 %b) { |
| ; CHECK-LABEL: define i8 @"dfs$add" |
| ; CHECK-DAG: %[[ALABEL:.*]] = load [[ST:.*]], [[ST]]* bitcast ([[VT:\[.*\]]]* @__dfsan_arg_tls to [[ST]]*), align [[ALIGN:2]] |
| ; CHECK-DAG: %[[BLABEL:.*]] = load [[ST]], [[ST]]* inttoptr (i64 add (i64 ptrtoint ([[VT]]* @__dfsan_arg_tls to i64), i64 2) to [[ST]]*), align [[ALIGN]] |
| ; CHECK: %[[ADDLABEL:.*]] = or i16 %[[ALABEL]], %[[BLABEL]] |
| ; CHECK: add i8 |
| ; CHECK: store [[ST]] %[[ADDLABEL]], [[ST]]* bitcast ([[VT]]* @__dfsan_retval_tls to [[ST]]*), align [[ALIGN]] |
| ; CHECK: ret i8 |
| %c = add i8 %a, %b |
| ret i8 %c |
| } |
| |
| define i8 @load8(i8* %p) { |
| ; CHECK-LABEL: define i8 @"dfs$load8" |
| ; CHECK: load i16, i16* |
| ; CHECK: ptrtoint i8* {{.*}} to i64 |
| ; CHECK: and i64 |
| ; CHECK: mul i64 |
| ; CHECK: inttoptr i64 |
| ; CHECK: load i16, i16* |
| ; CHECK: or i16 |
| ; CHECK: load i8, i8* |
| ; CHECK: store i16 {{.*}} @__dfsan_retval_tls |
| ; CHECK: ret i8 |
| |
| %a = load i8, i8* %p |
| ret i8 %a |
| } |
| |
| define i16 @load16(i16* %p) { |
| ; CHECK-LABEL: define i16 @"dfs$load16" |
| ; CHECK: ptrtoint i16* |
| ; CHECK: and i64 |
| ; CHECK: mul i64 |
| ; CHECK: inttoptr i64 {{.*}} i16* |
| ; CHECK: getelementptr i16 |
| ; CHECK: load i16, i16* |
| ; CHECK: load i16, i16* |
| ; CHECK: or i16 |
| ; CHECK: or i16 |
| ; CHECK: load i16, i16* |
| ; CHECK: store {{.*}} @__dfsan_retval_tls |
| ; CHECK: ret i16 |
| |
| %a = load i16, i16* %p |
| ret i16 %a |
| } |
| |
| define i32 @load32(i32* %p) { |
| ; CHECK-LABEL: define i32 @"dfs$load32" |
| ; CHECK: ptrtoint i32* |
| ; CHECK: and i64 |
| ; CHECK: mul i64 |
| ; CHECK: inttoptr i64 {{.*}} i16* |
| ; CHECK: bitcast i16* {{.*}} i64* |
| ; CHECK: load i64, i64* |
| ; CHECK: lshr i64 {{.*}}, 32 |
| ; CHECK: or i64 |
| ; CHECK: lshr i64 {{.*}}, 16 |
| ; CHECK: or i64 |
| ; CHECK: trunc i64 {{.*}} i16 |
| ; CHECK: or i16 |
| ; CHECK: load i32, i32* |
| ; CHECK: store i16 {{.*}} @__dfsan_retval_tls |
| ; CHECK: ret i32 |
| |
| %a = load i32, i32* %p |
| ret i32 %a |
| } |
| |
| define i64 @load64(i64* %p) { |
| ; CHECK-LABEL: define i64 @"dfs$load64" |
| ; CHECK: ptrtoint i64* |
| ; CHECK: and i64 |
| ; CHECK: mul i64 |
| ; CHECK: inttoptr i64 {{.*}} i16* |
| ; CHECK: bitcast i16* {{.*}} i64* |
| ; CHECK: load i64, i64* |
| ; CHECK: getelementptr i64, i64* {{.*}}, i64 1 |
| ; CHECK: load i64, i64* |
| ; CHECK: or i64 |
| ; CHECK: lshr i64 {{.*}}, 32 |
| ; CHECK: or i64 |
| ; CHECK: lshr i64 {{.*}}, 16 |
| ; CHECK: or i64 |
| ; CHECK: trunc i64 {{.*}} i16 |
| ; CHECK: or i16 |
| ; CHECK: load i64, i64* |
| ; CHECK: store i16 {{.*}} @__dfsan_retval_tls |
| ; CHECK: ret i64 |
| |
| %a = load i64, i64* %p |
| ret i64 %a |
| } |