; RUN: opt < %s -passes=dfsan -dfsan-combine-pointer-labels-on-load=true -S | FileCheck %s --check-prefixes=CHECK,COMBINE_LOAD_PTR ; RUN: opt < %s -passes=dfsan -dfsan-combine-pointer-labels-on-load=false -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" ; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]] ; CHECK: @__dfsan_retval_tls = external thread_local(initialexec) global [[TLS_ARR]] define {} @load0(ptr %p) { ; CHECK-LABEL: @load0.dfsan ; CHECK-NEXT: %a = load {}, ptr %p, align 1 ; CHECK-NEXT: store {} zeroinitializer, ptr @__dfsan_retval_tls, align [[ALIGN:2]] ; CHECK-NEXT: ret {} %a %a = load {}, ptr %p ret {} %a } define i8 @load8(ptr %p) { ; CHECK-LABEL: @load8.dfsan ; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i8, ptr @__dfsan_arg_tls, align [[ALIGN]] ; CHECK-NEXT: %[[#INTP:]] = ptrtoint ptr %p to i64 ; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#%.10d,MASK:]] ; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to ptr ; CHECK-NEXT: %[[#SHADOW:]] = load i8, ptr %[[#SHADOW_PTR]] ; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#PS]] ; CHECK-NEXT: %a = load i8, ptr %p ; CHECK-NEXT: store i8 %[[#SHADOW]], ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i8 %a %a = load i8, ptr %p ret i8 %a } define i16 @load16(ptr %p) { ; CHECK-LABEL: @load16.dfsan ; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i8, ptr @__dfsan_arg_tls, align [[ALIGN]] ; CHECK-NEXT: %[[#INTP:]] = ptrtoint ptr %p to i64 ; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]] ; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to ptr ; CHECK-NEXT: %[[#SHADOW_PTR+1]] = getelementptr i8, ptr %[[#SHADOW_PTR]], i64 1 ; CHECK-NEXT: %[[#SHADOW:]] = load i8, ptr %[[#SHADOW_PTR]] ; CHECK-NEXT: %[[#SHADOW+1]] = load i8, ptr %[[#SHADOW_PTR+1]] ; CHECK-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#SHADOW+1]] ; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#PS]] ; CHECK-NEXT: %a = load i16, ptr %p ; CHECK-NEXT: store i8 %[[#SHADOW]], ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i16 %a %a = load i16, ptr %p ret i16 %a } define i32 @load32(ptr %p) { ; CHECK-LABEL: @load32.dfsan ; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i8, ptr @__dfsan_arg_tls, align [[ALIGN]] ; CHECK-NEXT: %[[#INTP:]] = ptrtoint ptr %p to i64 ; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]] ; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to ptr ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i[[#WSBITS:32]], ptr %[[#SHADOW_PTR]], align 1 ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i[[#WSBITS]] %[[#WIDE_SHADOW]], 16 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i[[#WSBITS]] %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i[[#WSBITS]] %[[#WIDE_SHADOW]], 8 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i[[#WSBITS]] %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#SHADOW:]] = trunc i[[#WSBITS]] %[[#WIDE_SHADOW]] to i8 ; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#PS]] ; CHECK-NEXT: %a = load i32, ptr %p, align 4 ; CHECK-NEXT: store i8 %[[#SHADOW]], ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i32 %a %a = load i32, ptr %p ret i32 %a } define i64 @load64(ptr %p) { ; CHECK-LABEL: @load64.dfsan ; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i8, ptr @__dfsan_arg_tls, align [[ALIGN]] ; CHECK-NEXT: %[[#INTP:]] = ptrtoint ptr %p to i64 ; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]] ; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to ptr ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i64, ptr %[[#SHADOW_PTR]], align 1 ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 8 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i8 ; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#PS]] ; CHECK-NEXT: %a = load i64, ptr %p, align 8 ; CHECK-NEXT: store i8 %[[#SHADOW]], ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i64 %a %a = load i64, ptr %p ret i64 %a } define i128 @load128(ptr %p) { ; CHECK-LABEL: @load128.dfsan ; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i8, ptr @__dfsan_arg_tls, align [[ALIGN]] ; CHECK-NEXT: %[[#INTP:]] = ptrtoint ptr %p to i64 ; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]] ; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to ptr ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i64, ptr %[[#SHADOW_PTR]], align 1 ; CHECK-NEXT: %[[#WIDE_SHADOW_PTR2:]] = getelementptr i64, ptr %[[#SHADOW_PTR]], i64 1 ; CHECK-NEXT: %[[#WIDE_SHADOW2:]] = load i64, ptr %[[#WIDE_SHADOW_PTR2]], align 1 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW2]] ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 8 ; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]] ; CHECK-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i8 ; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#PS]] ; CHECK-NEXT: %a = load i128, ptr %p, align 8 ; CHECK-NEXT: store i8 %[[#SHADOW]], ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i128 %a %a = load i128, ptr %p ret i128 %a } define i17 @load17(ptr %p) { ; CHECK-LABEL: @load17.dfsan ; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i8, ptr @__dfsan_arg_tls, align [[ALIGN]] ; CHECK-NEXT: %[[#INTP:]] = ptrtoint ptr %p to i64 ; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]] ; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to ptr ; CHECK-NEXT: %[[#SHADOW:]] = call zeroext i8 @__dfsan_union_load(ptr %[[#SHADOW_PTR]], i64 3) ; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i8 %[[#SHADOW]], %[[#PS]] ; CHECK-NEXT: %a = load i17, ptr %p ; CHECK-NEXT: store i8 %[[#SHADOW]], ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i17 %a %a = load i17, ptr %p ret i17 %a } @X = constant i1 1 define i1 @load_global() { ; CHECK-LABEL: @load_global.dfsan ; CHECK-NEXT: %a = load i1, ptr @X ; CHECK-NEXT: store i8 0, ptr @__dfsan_retval_tls, align [[ALIGN]] ; CHECK-NEXT: ret i1 %a %a = load i1, ptr @X ret i1 %a }