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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=hwasan -hwasan-use-after-scope=1 -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=SCOPE
; RUN: opt -passes=hwasan -hwasan-use-after-scope=0 -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=NOSCOPE
; ModuleID = 'use-after-scope.c'
source_filename = "use-after-scope.c"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define dso_local i32 @standard_lifetime() local_unnamed_addr sanitize_hwaddress {
; SCOPE-LABEL: @standard_lifetime(
; SCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
; SCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
; SCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
; SCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
; SCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; SCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
; SCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
; SCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
; SCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
; SCOPE-NEXT: br label [[TMP8:%.*]]
; SCOPE: 8:
; SCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP4]] to i8
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP9]], i64 16)
; SCOPE-NEXT: [[TMP10:%.*]] = tail call i1 (...) @cond()
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; SCOPE-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: br i1 [[TMP10]], label [[TMP11:%.*]], label [[TMP8]]
; SCOPE: 11:
; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: ret i32 0
;
; NOSCOPE-LABEL: @standard_lifetime(
; NOSCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
; NOSCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
; NOSCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
; NOSCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
; NOSCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; NOSCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
; NOSCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
; NOSCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
; NOSCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
; NOSCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
; NOSCOPE-NEXT: br label [[TMP9:%.*]]
; NOSCOPE: 9:
; NOSCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: [[TMP10:%.*]] = tail call i1 (...) @cond()
; NOSCOPE-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: br i1 [[TMP10]], label [[TMP11:%.*]], label [[TMP9]]
; NOSCOPE: 11:
; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; NOSCOPE-NEXT: ret i32 0
;
%1 = alloca i8, align 1
br label %2
2: ; preds = %2, %0
; We should tag the memory after the br (in the loop).
call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
%3 = tail call i1 (...) @cond() #2
; We should tag the memory before the next br (before the jump back).
call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
br i1 %3, label %4, label %2
4: ; preds = %2
call void @use(i8* nonnull %1) #2
ret i32 0
}
define dso_local i32 @multiple_lifetimes() local_unnamed_addr sanitize_hwaddress {
; SCOPE-LABEL: @multiple_lifetimes(
; SCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
; SCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
; SCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
; SCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
; SCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; SCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
; SCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
; SCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
; SCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
; SCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; SCOPE-NEXT: ret i32 0
;
; NOSCOPE-LABEL: @multiple_lifetimes(
; NOSCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
; NOSCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
; NOSCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
; NOSCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
; NOSCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; NOSCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
; NOSCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
; NOSCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
; NOSCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
; NOSCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; NOSCOPE-NEXT: ret i32 0
;
%1 = alloca i8, align 1
; We erase lifetime markers if we insert instrumentation outside of the
; lifetime.
call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
call void @use(i8* nonnull %1) #2
call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
call void @use(i8* nonnull %1) #2
call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
ret i32 0
}
define dso_local i32 @unreachable_exit() local_unnamed_addr sanitize_hwaddress {
; SCOPE-LABEL: @unreachable_exit(
; SCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
; SCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
; SCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
; SCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
; SCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; SCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
; SCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
; SCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
; SCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
; SCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
; SCOPE-NEXT: [[TMP9:%.*]] = tail call i1 (...) @cond()
; SCOPE-NEXT: br i1 [[TMP9]], label [[TMP10:%.*]], label [[TMP11:%.*]]
; SCOPE: 10:
; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; SCOPE-NEXT: ret i32 0
; SCOPE: 11:
; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; SCOPE-NEXT: ret i32 0
;
; NOSCOPE-LABEL: @unreachable_exit(
; NOSCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
; NOSCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
; NOSCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
; NOSCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
; NOSCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; NOSCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
; NOSCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
; NOSCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
; NOSCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
; NOSCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
; NOSCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: [[TMP9:%.*]] = tail call i1 (...) @cond()
; NOSCOPE-NEXT: br i1 [[TMP9]], label [[TMP10:%.*]], label [[TMP11:%.*]]
; NOSCOPE: 10:
; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; NOSCOPE-NEXT: ret i32 0
; NOSCOPE: 11:
; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
; NOSCOPE-NEXT: ret i32 0
;
%1 = alloca i8, align 1
call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
%2 = tail call i1 (...) @cond() #2
br i1 %2, label %3, label %4
3:
call void @use(i8* nonnull %1) #2
call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
ret i32 0
4:
ret i32 0
}
declare dso_local i1 @cond(...) local_unnamed_addr
declare dso_local void @use(i8*) local_unnamed_addr
; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
|
