1 ; RUN: opt < %s -passes=asan -S -o %t.ll
2 ; RUN: FileCheck %s < %t.ll
3 ; RUN: llc < %t.ll | FileCheck %s --check-prefix=ASM
5 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-S32"
6 target triple = "i386-pc-windows-msvc"
8 define void @MyCPUID(i32 %fxn, ptr %out) sanitize_address {
14 store i32 %fxn, ptr %fxn.ptr
15 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)
17 %a = load i32, ptr %a.ptr
18 store i32 %a, ptr %out
20 %b = load i32, ptr %b.ptr
21 %b.out = getelementptr inbounds i32, ptr %out, i32 1
22 store i32 %b, ptr %b.out
24 %c = load i32, ptr %c.ptr
25 %c.out = getelementptr inbounds i32, ptr %out, i32 2
26 store i32 %c, ptr %c.out
28 %d = load i32, ptr %d.ptr
29 %d.out = getelementptr inbounds i32, ptr %out, i32 3
30 store i32 %d, ptr %d.out
35 ; We used to introduce stack mallocs for UAR detection, but that makes LLVM run
36 ; out of registers on 32-bit platforms. Therefore, we don't do stack malloc on
39 ; CHECK-LABEL: define void @MyCPUID(i32 %fxn, ptr %out)
40 ; CHECK: %MyAlloca = alloca [96 x i8], align 32
41 ; CHECK-NOT: call {{.*}} @__asan_stack_malloc
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 all
45 ; local variables can be referenced freely.
49 ; 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)