diff --git a/llvm/test/CodeGen/AArch64/stack-tagging-stack-coloring.ll b/llvm/test/CodeGen/AArch64/stack-tagging-stack-coloring.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/stack-tagging-stack-coloring.ll @@ -0,0 +1,41 @@ +; Test that storage for allocas with disjoint lifetimes is reused with stack +; tagging. + +; RUN: opt -S -aarch64-stack-tagging %s -o - | \ +; RUN: llc -no-stack-coloring=false -o - | \ +; RUN: FileCheck %s --check-prefix=COLOR +; RUN: opt -S -aarch64-stack-tagging %s -o - | \ +; RUN: llc -no-stack-coloring=true -o - | \ +; RUN: FileCheck %s --check-prefix=NOCOLOR + +target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" +target triple = "aarch64-unknown-linux-android29" + +; COLOR: sub sp, sp, #192 +; NOCOLOR: sub sp, sp, #320 + +define i32 @myCall_w2(i32 %in) sanitize_hwaddress { +entry: + %a = alloca [17 x i8*], align 8 + %a2 = alloca [16 x i8*], align 8 + %b = bitcast [17 x i8*]* %a to i8* + %b2 = bitcast [16 x i8*]* %a2 to i8* + call void @llvm.lifetime.start.p0i8(i64 136, i8* %b) + %t1 = call i32 @foo(i32 %in, i8* %b) + %t2 = call i32 @foo(i32 %in, i8* %b) + call void @llvm.lifetime.end.p0i8(i64 136, i8* %b) + call void @llvm.lifetime.start.p0i8(i64 128, i8* %b2) + %t3 = call i32 @foo(i32 %in, i8* %b2) + %t4 = call i32 @foo(i32 %in, i8* %b2) + call void @llvm.lifetime.end.p0i8(i64 128, i8* %b2) + %t5 = add i32 %t1, %t2 + %t6 = add i32 %t3, %t4 + %t7 = add i32 %t5, %t6 + ret i32 %t7 +} + +declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind + +declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind + +declare i32 @foo(i32, i8*)