| ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s |
| ; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s |
| ; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s |
| ; RUN: opt -passes=safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s |
| |
| %struct.small = type { i8 } |
| |
| @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 |
| |
| ; Address-of a structure taken in a function with a loop where |
| ; the alloca is an incoming value to a PHI node and a use of that PHI |
| ; node is also an incoming value. |
| ; Verify that the address-of analysis does not get stuck in infinite |
| ; recursion when chasing the alloca through the PHI nodes. |
| ; Requires protector. |
| define i32 @foo(i32 %arg) nounwind uwtable safestack { |
| bb: |
| ; CHECK: __safestack_unsafe_stack_ptr |
| %tmp = alloca ptr, align 8 |
| %tmp1 = call i32 (...) @dummy(ptr %tmp) nounwind |
| %tmp2 = load ptr, ptr %tmp, align 8 |
| %tmp3 = ptrtoint ptr %tmp2 to i64 |
| %tmp4 = trunc i64 %tmp3 to i32 |
| %tmp5 = icmp sgt i32 %tmp4, 0 |
| br i1 %tmp5, label %bb6, label %bb21 |
| |
| bb6: ; preds = %bb17, %bb |
| %tmp7 = phi ptr [ %tmp19, %bb17 ], [ %tmp2, %bb ] |
| %tmp8 = phi i64 [ %tmp20, %bb17 ], [ 1, %bb ] |
| %tmp9 = phi i32 [ %tmp14, %bb17 ], [ %tmp1, %bb ] |
| %tmp11 = load i8, ptr %tmp7, align 1 |
| %tmp12 = icmp eq i8 %tmp11, 1 |
| %tmp13 = add nsw i32 %tmp9, 8 |
| %tmp14 = select i1 %tmp12, i32 %tmp13, i32 %tmp9 |
| %tmp15 = trunc i64 %tmp8 to i32 |
| %tmp16 = icmp eq i32 %tmp15, %tmp4 |
| br i1 %tmp16, label %bb21, label %bb17 |
| |
| bb17: ; preds = %bb6 |
| %tmp18 = getelementptr inbounds ptr, ptr %tmp, i64 %tmp8 |
| %tmp19 = load ptr, ptr %tmp18, align 8 |
| %tmp20 = add i64 %tmp8, 1 |
| br label %bb6 |
| |
| bb21: ; preds = %bb6, %bb |
| %tmp22 = phi i32 [ %tmp1, %bb ], [ %tmp14, %bb6 ] |
| %tmp23 = call i32 (...) @dummy(i32 %tmp22) nounwind |
| ret i32 undef |
| } |
| |
| declare i32 @dummy(...) |
