1; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s 2; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s 3 4@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 5 6; array of [16 x i8] 7 8define void @foo(i8* %a) nounwind uwtable safestack { 9entry: 10 ; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr 11 12 ; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16 13 14 ; CHECK: store i8* %[[USST]], i8** @__safestack_unsafe_stack_ptr 15 16 %a.addr = alloca i8*, align 8 17 %buf = alloca [16 x i8], align 16 18 19 ; CHECK: %[[AADDR:.*]] = alloca i8*, align 8 20 ; CHECK: store i8* {{.*}}, i8** %[[AADDR]], align 8 21 store i8* %a, i8** %a.addr, align 8 22 23 ; CHECK: %[[BUFPTR:.*]] = getelementptr i8, i8* %[[USP]], i32 -16 24 ; CHECK: %[[BUFPTR2:.*]] = bitcast i8* %[[BUFPTR]] to [16 x i8]* 25 ; CHECK: %[[GEP:.*]] = getelementptr inbounds [16 x i8], [16 x i8]* %[[BUFPTR2]], i32 0, i32 0 26 %gep = getelementptr inbounds [16 x i8], [16 x i8]* %buf, i32 0, i32 0 27 28 ; CHECK: %[[A2:.*]] = load i8*, i8** %[[AADDR]], align 8 29 %a2 = load i8*, i8** %a.addr, align 8 30 31 ; CHECK: call i8* @strcpy(i8* %[[GEP]], i8* %[[A2]]) 32 %call = call i8* @strcpy(i8* %gep, i8* %a2) 33 34 ; CHECK: store i8* %[[USP]], i8** @__safestack_unsafe_stack_ptr 35 ret void 36} 37 38declare i8* @strcpy(i8*, i8*) 39