1; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-after-return -asan-stack-dynamic-alloca -S | FileCheck %s 2; RUN: opt < %s -passes='asan-pipeline' -asan-use-after-return -asan-stack-dynamic-alloca -S | FileCheck %s 3; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-after-return=0 -asan-stack-dynamic-alloca=0 -S | FileCheck %s 4; RUN: opt < %s -passes='asan-pipeline' -asan-use-after-return=0 -asan-stack-dynamic-alloca=0 -S | FileCheck %s 5 6target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" 7target triple = "i686-pc-windows-msvc18.0.0" 8 9declare i32 @llvm.eh.typeid.for(i8*) #2 10declare i8* @llvm.frameaddress(i32) 11declare i8* @llvm.eh.recoverfp(i8*, i8*) 12declare i8* @llvm.localrecover(i8*, i8*, i32) 13declare void @llvm.localescape(...) #1 14 15declare i32 @_except_handler3(...) 16declare void @may_throw(i32* %r) 17 18define i32 @main() sanitize_address personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) { 19entry: 20 %r = alloca i32, align 4 21 %__exception_code = alloca i32, align 4 22 call void (...) @llvm.localescape(i32* nonnull %__exception_code) 23 %0 = bitcast i32* %r to i8* 24 store i32 0, i32* %r, align 4 25 invoke void @may_throw(i32* nonnull %r) #4 26 to label %__try.cont unwind label %lpad 27 28lpad: ; preds = %entry 29 %1 = landingpad { i8*, i32 } 30 catch i8* bitcast (i32 ()* @"\01?filt$0@0@main@@" to i8*) 31 %2 = extractvalue { i8*, i32 } %1, 1 32 %3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @"\01?filt$0@0@main@@" to i8*)) #1 33 %matches = icmp eq i32 %2, %3 34 br i1 %matches, label %__except, label %eh.resume 35 36__except: ; preds = %lpad 37 store i32 1, i32* %r, align 4 38 br label %__try.cont 39 40__try.cont: ; preds = %entry, %__except 41 %4 = load i32, i32* %r, align 4 42 ret i32 %4 43 44eh.resume: ; preds = %lpad 45 resume { i8*, i32 } %1 46} 47 48; Check that the alloca remains static and the localescape call remains in the 49; entry block. 50 51; CHECK-LABEL: define i32 @main() 52; CHECK-NOT: br {{.*}}label 53; CHECK: %__exception_code = alloca i32, align 4 54; CHECK-NOT: br {{.*}}label 55; CHECK: call void (...) @llvm.localescape(i32* nonnull %__exception_code) 56 57; Function Attrs: nounwind 58define internal i32 @"\01?filt$0@0@main@@"() #1 { 59entry: 60 %0 = tail call i8* @llvm.frameaddress(i32 1) 61 %1 = tail call i8* @llvm.eh.recoverfp(i8* bitcast (i32 ()* @main to i8*), i8* %0) 62 %2 = tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* %1, i32 0) 63 %__exception_code = bitcast i8* %2 to i32* 64 %3 = getelementptr inbounds i8, i8* %0, i32 -20 65 %4 = bitcast i8* %3 to { i32*, i8* }** 66 %5 = load { i32*, i8* }*, { i32*, i8* }** %4, align 4 67 %6 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %5, i32 0, i32 0 68 %7 = load i32*, i32** %6, align 4 69 %8 = load i32, i32* %7, align 4 70 store i32 %8, i32* %__exception_code, align 4 71 ret i32 1 72} 73 74; CHECK-LABEL: define internal i32 @"\01?filt$0@0@main@@"() 75; CHECK: tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* {{.*}}, i32 0) 76 77define void @ScaleFilterCols_SSSE3(i8* %dst_ptr, i8* %src_ptr, i32 %dst_width, i32 %x, i32 %dx) sanitize_address { 78entry: 79 %dst_width.addr = alloca i32, align 4 80 store i32 %dst_width, i32* %dst_width.addr, align 4 81 %0 = call { i8*, i8*, i32, i32, i32 } asm sideeffect "", "=r,=r,={ax},=r,=r,=*rm,rm,rm,0,1,2,3,4,5,~{memory},~{cc},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{dirflag},~{fpsr},~{flags}"(i32* nonnull %dst_width.addr, i32 %x, i32 %dx, i8* %dst_ptr, i8* %src_ptr, i32 0, i32 0, i32 0, i32 %dst_width) 82 ret void 83} 84 85define void @ScaleColsUp2_SSE2() sanitize_address { 86entry: 87 ret void 88} 89