clang/test/CodeGen/mozilla-ms-inline-asm.c

   1 // REQUIRES: x86-registered-target
   2 // RUN: %clang_cc1 %s -triple i386-apple-darwin10 -fasm-blocks -emit-llvm -o - | opt -passes=strip -S | FileCheck %s
   3
   4 // Some test cases for MS inline asm support from Mozilla code base.
   5
   6 void invoke_copy_to_stack() {}
   7
   8 void invoke(void* that, unsigned methodIndex,
   9             unsigned paramCount, void* params)
  10 {
  11 // CHECK: @invoke
  12 // CHECK: %5 = alloca ptr, align 4
  13 // CHECK: %6 = alloca i32, align 4
  14 // CHECK: %7 = alloca i32, align 4
  15 // CHECK: %8 = alloca ptr, align 4
  16 // CHECK: store ptr %0, ptr %5, align 4
  17 // CHECK: store i32 %1, ptr %6, align 4
  18 // CHECK: store i32 %2, ptr %7, align 4
  19 // CHECK: store ptr %3, ptr %8, align 4
  20 // CHECK: call void asm sideeffect inteldialect
  21 // CHECK-SAME: mov edx,$1
  22 // CHECK-SAME: test edx,edx
  23 // CHECK-SAME: jz {{[^_]*}}__MSASMLABEL_.${:uid}__noparams
  24 //                ^ Can't use {{.*}} here because the matching is greedy.
  25 // CHECK-SAME: mov eax,edx
  26 // CHECK-SAME: shl eax,$$3
  27 // CHECK-SAME: sub esp,eax
  28 // CHECK-SAME: mov ecx,esp
  29 // CHECK-SAME: push $0
  30 // CHECK-SAME: call ${2:P}
  31 // CHECK-SAME: {{.*}}__MSASMLABEL_.${:uid}__noparams:
  32 // CHECK-SAME: mov ecx,$3
  33 // CHECK-SAME: push ecx
  34 // CHECK-SAME: mov edx,[ecx]
  35 // CHECK-SAME: mov eax,$4
  36 // CHECK-SAME: call dword ptr[edx + eax * $$4]
  37 // CHECK-SAME: mov esp,ebp
  38 // CHECK-SAME: pop ebp
  39 // CHECK-SAME: ret
  40 // CHECK: "=*m,*m,*m,*m,*m,~{eax},~{ebp},~{ecx},~{edx},~{flags},~{esp},~{dirflag},~{fpsr},~{flags}"
  41 // CHECK: (ptr elementtype(ptr) %8, ptr elementtype(i32) %7, ptr elementtype(void (...)) @invoke_copy_to_stack, ptr elementtype(ptr) %5, ptr elementtype(i32) %6)
  42 // CHECK: ret void
  43     __asm {
  44         mov     edx,paramCount
  45         test    edx,edx
  46         jz      noparams
  47         mov     eax,edx
  48         shl     eax,3
  49         sub     esp,eax
  50         mov     ecx,esp
  51         push    params
  52         call    invoke_copy_to_stack
  53 noparams:
  54         mov     ecx,that
  55         push    ecx
  56         mov     edx,[ecx]
  57         mov     eax,methodIndex
  58         call    dword ptr[edx+eax*4]
  59         mov     esp,ebp
  60         pop     ebp
  61         ret
  62     }
  63 }
  64