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; 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
}
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