Imported Upstream version 5.18.0.225

Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5

external/llvm/test/Transforms/SafeStack/X86/struct.ll

@@ -0,0 +1,40 @@
+; 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
+
+%struct.foo = type { [16 x i8] }
+
+@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
+
+; struct { [16 x i8] }
+
+define void @foo(i8* %a) nounwind uwtable safestack {
+entry:
+  ; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
+
+  ; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16
+
+  ; CHECK: store i8* %[[USST]], i8** @__safestack_unsafe_stack_ptr
+
+  %a.addr = alloca i8*, align 8
+  %buf = alloca %struct.foo, align 1
+
+  ; CHECK: %[[AADDR:.*]] = alloca i8*, align 8
+  ; CHECK: store i8* {{.*}}, i8** %[[AADDR]], align 8
+  store i8* %a, i8** %a.addr, align 8
+
+  ; CHECK: %[[BUFPTR:.*]] = getelementptr i8, i8* %[[USP]], i32 -16
+  ; CHECK: %[[BUFPTR2:.*]] = bitcast i8* %[[BUFPTR]] to %struct.foo*
+  ; CHECK: %[[GEP:.*]] = getelementptr inbounds %struct.foo, %struct.foo* %[[BUFPTR2]], i32 0, i32 0, i32 0
+  %gep = getelementptr inbounds %struct.foo, %struct.foo* %buf, i32 0, i32 0, i32 0
+
+  ; CHECK: %[[A:.*]] = load i8*, i8** %[[AADDR]], align 8
+  %a2 = load i8*, i8** %a.addr, align 8
+
+  ; CHECK: call i8* @strcpy(i8* %[[GEP]], i8* %[[A]])
+  %call = call i8* @strcpy(i8* %gep, i8* %a2)
+
+  ; CHECK: store i8* %[[USP]], i8** @__safestack_unsafe_stack_ptr
+  ret void
+}
+
+declare i8* @strcpy(i8*, i8*)