| ; RUN: llc --frame-pointer=all -mtriple=aarch64-- < %s | FileCheck %s |
| |
| ; PR25610: -fstack-protector places the canary in the wrong place on arm64 with |
| ; va_args |
| |
| %struct.__va_list = type { ptr, ptr, ptr, i32, i32 } |
| |
| ; CHECK-LABEL: test |
| ; CHECK: ldr [[GUARD:x[0-9]+]]{{.*}}:lo12:__stack_chk_guard] |
| ; Make sure the canary is placed relative to the frame pointer, not |
| ; the stack pointer. |
| ; CHECK: stur [[GUARD]], [x29, #-8] |
| define void @test(ptr %i, ...) #0 { |
| entry: |
| %buf = alloca [10 x i8], align 1 |
| %ap = alloca %struct.__va_list, align 8 |
| %tmp = alloca %struct.__va_list, align 8 |
| call void @llvm.lifetime.start(i64 10, ptr %buf) |
| call void @llvm.lifetime.start(i64 32, ptr %ap) |
| call void @llvm.va_start(ptr %ap) |
| call void @llvm.memcpy.p0.p0.i64(ptr %tmp, ptr %ap, i64 32, i32 8, i1 false) |
| call void @baz(ptr %i, ptr nonnull %tmp) |
| call void @bar(ptr %buf) |
| call void @llvm.va_end(ptr %ap) |
| call void @llvm.lifetime.end(i64 32, ptr %ap) |
| call void @llvm.lifetime.end(i64 10, ptr %buf) |
| ret void |
| } |
| |
| declare void @llvm.lifetime.start(i64, ptr nocapture) |
| declare void @llvm.va_start(ptr) |
| declare void @baz(ptr, ptr) |
| declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i32, i1) |
| declare void @bar(ptr) |
| declare void @llvm.va_end(ptr) |
| declare void @llvm.lifetime.end(i64, ptr nocapture) |
| |
| attributes #0 = { noinline nounwind optnone ssp } |
| |
| !llvm.module.flags = !{!0} |
| !0 = !{i32 7, !"direct-access-external-data", i32 1} |