| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -O2 -fsanitize=kernel-memory -no-enable-noundef-analysis -o - %s | \ |
| // RUN: FileCheck %s --check-prefix=CLEAN |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -O2 -fsanitize=kernel-memory -fno-sanitize-memory-param-retval -o - %s | \ |
| // RUN: FileCheck %s --check-prefixes=NOUNDEF,NOUNDEF_ONLY |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -O2 -fsanitize=kernel-memory -mllvm -msan-eager-checks -o - %s | \ |
| // RUN: FileCheck %s --check-prefixes=NOUNDEF,EAGER |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -O2 -fsanitize=kernel-memory -no-enable-noundef-analysis -fsanitize-memory-param-retval -o - %s | \ |
| // RUN: FileCheck %s --check-prefixes=CLEAN |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -O2 -fsanitize=kernel-memory -o - %s | \ |
| // RUN: FileCheck %s --check-prefixes=NOUNDEF,EAGER |
| |
| void foo(); |
| |
| void bar(int x) { |
| if (x) |
| foo(); |
| } |
| |
| |
| // CLEAN: define dso_local void @bar(i32 %x) |
| // NOUNDEF: define dso_local void @bar(i32 noundef %x) |
| // |
| // %param_shadow assignment gets optimized away with -O2, because it is at the beginning of the |
| // struct returned by __msan_get_context_state(). Use %param_origin as a sign that the shadow of |
| // the first argument is being used. |
| // |
| // Without noundef analysis, KMSAN emits metadata checks for the function parameter. |
| // CLEAN: load i32, ptr %param_origin |
| // |
| // With noundef analysis enabled, but without eager checks, KMSAN still emits metadata checks, |
| // although the parameter is known to be defined. |
| // NOUNDEF_ONLY: load i32, ptr %param_origin |
| // |
| // With noundef analysis and eager checks enabled, KMSAN won't emit metadata checks for function |
| // parameters. |
| // EAGER-NOT: load i32, ptr %param_origin |
