[NFC, StackSafety] LTO tests for MTE and StackSafety
Summary: The test demonstrates the current state of the compiler and I am going to resolve FIXME in followup patches. Reviewers: eugenis Reviewed By: eugenis Subscribers: inglorion, hiraditya, steven_wu, dexonsmith, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D80039
This commit is contained in:
Vitaly Buka
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// REQUIRES: aarch64-registered-target
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// RUN: rm -f %t*
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// -O1, no tagging: both are unsafe.
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -S -emit-llvm -c %s -o - | FileCheck %s
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -S -emit-llvm -c %s -o - | FileCheck %s
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// Full LTO: both are unsafe.
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -c %s -flto=full -o %t.lto1.bc
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -c -DBUILD2 %s -flto=full -o %t.lto2.bc
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// RUN: llvm-lto2 run -o %t.lto %t.lto1.bc %t.lto2.bc -save-temps -O1 \
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// RUN: -r %t.lto1.bc,fn,plx \
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// RUN: -r %t.lto1.bc,use,lx \
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// RUN: -r %t.lto1.bc,use_local,plx \
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// RUN: -r %t.lto1.bc,w, \
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// RUN: -r %t.lto2.bc,use,plx \
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// RUN: -r %t.lto2.bc,z,
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// RUN: llvm-dis %t.lto.0.5.precodegen.bc -o - | FileCheck %s
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// Full LTO, new PM: both are unsafe.
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -c %s -flto=full -o %t.ltonewpm1.bc
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -c -DBUILD2 %s -flto=full -o %t.ltonewpm2.bc
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// RUN: llvm-lto2 run -use-new-pm -o %t.ltonewpm %t.ltonewpm1.bc %t.ltonewpm2.bc -save-temps -O1 \
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// RUN: -r %t.ltonewpm1.bc,fn,plx \
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// RUN: -r %t.ltonewpm1.bc,use,lx \
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// RUN: -r %t.ltonewpm1.bc,use_local,plx \
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// RUN: -r %t.ltonewpm1.bc,w, \
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// RUN: -r %t.ltonewpm2.bc,use,plx \
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// RUN: -r %t.ltonewpm2.bc,z,
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// RUN: llvm-dis %t.ltonewpm.0.5.precodegen.bc -o - | FileCheck %s
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// Thin LTO: both are unsafe.
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -c %s -flto=thin -o %t.thinlto1.bc
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -c -DBUILD2 %s -flto=thin -o %t.thinlto2.bc
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// RUN: llvm-lto2 run -o %t.thinlto %t.thinlto1.bc %t.thinlto2.bc -save-temps -O1 \
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// RUN: -r %t.thinlto1.bc,fn,plx \
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// RUN: -r %t.thinlto1.bc,use,lx \
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// RUN: -r %t.thinlto1.bc,use_local,plx \
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// RUN: -r %t.thinlto1.bc,w, \
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// RUN: -r %t.thinlto2.bc,use,plx \
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// RUN: -r %t.thinlto2.bc,z,
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// RUN: llvm-dis %t.thinlto.1.5.precodegen.bc -o - | FileCheck %s
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// Thin LTO, new PM: both are unsafe.
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -c %s -flto=thin -o %t.thinltonewpm1.bc
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -c -DBUILD2 %s -flto=thin -o %t.thinltonewpm2.bc
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// RUN: llvm-lto2 run -use-new-pm -o %t.thinltonewpm %t.thinltonewpm1.bc %t.thinltonewpm2.bc -save-temps -O1 \
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// RUN: -r %t.thinltonewpm1.bc,fn,plx \
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// RUN: -r %t.thinltonewpm1.bc,use,lx \
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// RUN: -r %t.thinltonewpm1.bc,use_local,plx \
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// RUN: -r %t.thinltonewpm1.bc,w, \
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// RUN: -r %t.thinltonewpm2.bc,use,plx \
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// RUN: -r %t.thinltonewpm2.bc,z,
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// RUN: llvm-dis %t.thinltonewpm.1.5.precodegen.bc -o - | FileCheck %s
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// Now with MTE.
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// RUN: rm -f %t*
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// -O0: both are unsafe.
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// RUN: %clang -fno-experimental-new-pass-manager -O0 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -S -emit-llvm -c %s -o - | FileCheck %s
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// RUN: %clang -fexperimental-new-pass-manager -O0 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -S -emit-llvm -c %s -o - | FileCheck %s
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// No LTO: just one is safe.
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -S -emit-llvm -c %s -o - | FileCheck %s -check-prefixes=XUNSAFE,YSAFE
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -S -emit-llvm -c %s -o - | FileCheck %s -check-prefixes=XUNSAFE,YSAFE
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// FIXME: Full LTO: both are safe.
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c %s -flto=full -o %t.lto1.bc
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c -DBUILD2 %s -flto=full -o %t.lto2.bc
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// RUN: llvm-lto2 run -o %t.lto %t.lto1.bc %t.lto2.bc -save-temps -O1 \
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// RUN: -r %t.lto1.bc,fn,plx \
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// RUN: -r %t.lto1.bc,use,lx \
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// RUN: -r %t.lto1.bc,use_local,plx \
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// RUN: -r %t.lto1.bc,w, \
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// RUN: -r %t.lto2.bc,use,plx \
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// RUN: -r %t.lto2.bc,z,
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// RUN: llvm-dis %t.lto.0.5.precodegen.bc -o - | FileCheck %s -check-prefixes=XUNSAFE,YSAFE
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// FIXME: Full LTO, new PM: both are safe.
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c %s -flto=full -o %t.ltonewpm1.bc
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c -DBUILD2 %s -flto=full -o %t.ltonewpm2.bc
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// RUN: llvm-lto2 run -use-new-pm -o %t.ltonewpm %t.ltonewpm1.bc %t.ltonewpm2.bc -save-temps -O1 \
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// RUN: -r %t.ltonewpm1.bc,fn,plx \
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// RUN: -r %t.ltonewpm1.bc,use,lx \
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// RUN: -r %t.ltonewpm1.bc,use_local,plx \
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// RUN: -r %t.ltonewpm1.bc,w, \
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// RUN: -r %t.ltonewpm2.bc,use,plx \
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// RUN: -r %t.ltonewpm2.bc,z,
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// RUN: llvm-dis %t.ltonewpm.0.5.precodegen.bc -o - | FileCheck %s -check-prefixes=XUNSAFE,YSAFE
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// FIXME: Thin LTO: both are safe.
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c %s -flto=thin -o %t.thinlto1.bc
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// RUN: %clang -fno-experimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c -DBUILD2 %s -flto=thin -o %t.thinlto2.bc
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// RUN: llvm-lto2 run -o %t.thinlto %t.thinlto1.bc %t.thinlto2.bc -save-temps -O1 \
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// RUN: -r %t.thinlto1.bc,fn,plx \
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// RUN: -r %t.thinlto1.bc,use,lx \
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// RUN: -r %t.thinlto1.bc,use_local,plx \
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// RUN: -r %t.thinlto1.bc,w, \
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// RUN: -r %t.thinlto2.bc,use,plx \
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// RUN: -r %t.thinlto2.bc,z,
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// RUN: llvm-dis %t.thinlto.1.5.precodegen.bc -o - | FileCheck %s -check-prefixes=XUNSAFE,YSAFE
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// FIXME: Thin LTO, new PM: both are safe.
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c %s -flto=thin -o %t.thinltonewpm1.bc
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// RUN: %clang -fexperimental-new-pass-manager -O1 -target aarch64-unknown-linux -march=armv8+memtag -fsanitize=memtag -c -DBUILD2 %s -flto=thin -o %t.thinltonewpm2.bc
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// RUN: llvm-lto2 run -use-new-pm -o %t.thinltonewpm %t.thinltonewpm1.bc %t.thinltonewpm2.bc -save-temps -O1 \
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// RUN: -r %t.thinltonewpm1.bc,fn,plx \
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// RUN: -r %t.thinltonewpm1.bc,use,lx \
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// RUN: -r %t.thinltonewpm1.bc,use_local,plx \
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// RUN: -r %t.thinltonewpm1.bc,w, \
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// RUN: -r %t.thinltonewpm2.bc,use,plx \
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// RUN: -r %t.thinltonewpm2.bc,z,
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// RUN: llvm-dis %t.thinltonewpm.1.5.precodegen.bc -o - | FileCheck %s -check-prefixes=XUNSAFE,YSAFE
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void use(int *p);
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#ifdef BUILD2
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int z;
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__attribute__((noinline)) void use(int *p) { *p = z; }
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#else
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char w;
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__attribute__((noinline)) void use_local(char *p) { *p = w; }
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__attribute__((visibility("default"))) int fn() {
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// XUNSAFE: alloca i32, align 4{{$}}
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// XSAFE: alloca i32, align 4, !stack-safe
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int x;
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use(&x);
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// YUNSAFE-NEXT: alloca i8, align 4{{$}}
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// YSAFE-NEXT: alloca i8, align 4, !stack-safe
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char y;
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use_local(&y);
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return x + y;
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}
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// CHECK-NOT: !stack-safe
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#endif
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