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 4 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 i32 10 %a.ptr = alloca i32 11 %b.ptr = alloca i32 12 %c.ptr = alloca i32 13 %d.ptr = alloca i32 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) 16 17 %a = load i32, ptr %a.ptr 18 store i32 %a, ptr %out 19 20 %b = load i32, ptr %b.ptr 21 %b.out = getelementptr inbounds i32, ptr %out, i32 1 22 store i32 %b, ptr %b.out 23 24 %c = load i32, ptr %c.ptr 25 %c.out = getelementptr inbounds i32, ptr %out, i32 2 26 store i32 %c, ptr %c.out 27 28 %d = load i32, ptr %d.ptr 29 %d.out = getelementptr inbounds i32, ptr %out, i32 3 30 store i32 %d, ptr %d.out 31 32 ret void 33} 34 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 37; such functions. 38 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 42 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. 46 47; ASM-LABEL: MyCPUID: 48; ASM: cpuid 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) 53