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Diffstat (limited to 'test/CodeGen/AArch64/stack-guard-remat-bitcast.ll')
| -rw-r--r-- | test/CodeGen/AArch64/stack-guard-remat-bitcast.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/stack-guard-remat-bitcast.ll b/test/CodeGen/AArch64/stack-guard-remat-bitcast.ll new file mode 100644 index 0000000..bedbf5f --- /dev/null +++ b/test/CodeGen/AArch64/stack-guard-remat-bitcast.ll @@ -0,0 +1,26 @@ +; RUN: llc < %s -mtriple=arm64-apple-ios -relocation-model=pic | FileCheck %s + +@__stack_chk_guard = external global i64* + +; PR20558 + +; CHECK: adrp [[R0:x[0-9]+]], ___stack_chk_guard@GOTPAGE +; CHECK: ldr [[R1:x[0-9]+]], {{\[}}[[R0]], ___stack_chk_guard@GOTPAGEOFF{{\]}} +; CHECK: ldr [[R2:x[0-9]+]], {{\[}}[[R1]]{{\]}} +; CHECK: stur [[R2]], {{\[}}x29, [[SLOT0:[0-9#\-]+]]{{\]}} +; CHECK: ldur [[R3:x[0-9]+]], {{\[}}x29, [[SLOT0]]{{\]}} +; CHECK: sub [[R4:x[0-9]+]], [[R2]], [[R3]] +; CHECK: cbnz [[R4]], LBB + +define i32 @test_stack_guard_remat2() { +entry: + %StackGuardSlot = alloca i8* + %StackGuard = load i8** bitcast (i64** @__stack_chk_guard to i8**) + call void @llvm.stackprotector(i8* %StackGuard, i8** %StackGuardSlot) + %container = alloca [32 x i8], align 1 + call void @llvm.stackprotectorcheck(i8** bitcast (i64** @__stack_chk_guard to i8**)) + ret i32 -1 +} + +declare void @llvm.stackprotector(i8*, i8**) +declare void @llvm.stackprotectorcheck(i8**) |