53 lines · plain
1; RUN: opt < %s -passes=asan -S -o %t.ll2; RUN: FileCheck %s < %t.ll3; RUN: llc < %t.ll | FileCheck %s --check-prefix=ASM4 5target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-S32"6target triple = "i386-pc-windows-msvc"7 8define void @MyCPUID(i32 %fxn, ptr %out) sanitize_address {9 %fxn.ptr = alloca i3210 %a.ptr = alloca i3211 %b.ptr = alloca i3212 %c.ptr = alloca i3213 %d.ptr = alloca i3214 store i32 %fxn, ptr %fxn.ptr15 call void asm sideeffect inteldialect "xchg ebx, esi\0A\09mov eax, dword ptr $4\0A\09cpuid\0A\09mov dword ptr $0, eax\0A\09mov dword ptr $1, ebx\0A\09mov dword ptr $2, ecx\0A\09mov dword ptr $3, edx\0A\09xchg ebx, esi", "=*m,=*m,=*m,=*m,*m,~{eax},~{ebx},~{ecx},~{edx},~{esi},~{dirflag},~{fpsr},~{flags}"(ptr elementtype(i32) %a.ptr, ptr elementtype(i32) %b.ptr, ptr elementtype(i32) %c.ptr, ptr elementtype(i32) %d.ptr, ptr elementtype(i32) %fxn.ptr)16 17 %a = load i32, ptr %a.ptr18 store i32 %a, ptr %out19 20 %b = load i32, ptr %b.ptr21 %b.out = getelementptr inbounds i32, ptr %out, i32 122 store i32 %b, ptr %b.out23 24 %c = load i32, ptr %c.ptr25 %c.out = getelementptr inbounds i32, ptr %out, i32 226 store i32 %c, ptr %c.out27 28 %d = load i32, ptr %d.ptr29 %d.out = getelementptr inbounds i32, ptr %out, i32 330 store i32 %d, ptr %d.out31 32 ret void33}34 35; We used to introduce stack mallocs for UAR detection, but that makes LLVM run36; out of registers on 32-bit platforms. Therefore, we don't do stack malloc on37; such functions.38 39; CHECK-LABEL: define void @MyCPUID(i32 %fxn, ptr %out)40; CHECK: %MyAlloca = alloca [96 x i8], align 3241; CHECK-NOT: call {{.*}} @__asan_stack_malloc42 43; The code generator should recognize that all operands are just stack memory.44; This is important with MS inline asm where operand lists are implicit and all45; local variables can be referenced freely.46 47; ASM-LABEL: MyCPUID:48; ASM: cpuid49; ASM-NEXT: movl %eax, {{[0-9]+}}(%esp)50; ASM-NEXT: movl %ebx, {{[0-9]+}}(%esp)51; ASM-NEXT: movl %ecx, {{[0-9]+}}(%esp)52; ASM-NEXT: movl %edx, {{[0-9]+}}(%esp)53