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1 // REQUIRES: x86-registered-target
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2 // RUN: %clang_cc1 %s -triple i386-pc-windows-msvc -fms-extensions -S -o - | FileCheck %s
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3
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4 // Yes, this is an assembly test from Clang, because we need to make it all the
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5 // way through code generation to know if our call became a direct, pc-relative
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6 // call or an indirect call through memory.
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7
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8 int k(int);
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9 __declspec(dllimport) int kimport(int);
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10 int (*kptr)(int);
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11 int (*gptr())(int);
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12
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13 int foo() {
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14 // CHECK-LABEL: _foo:
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15 int (*r)(int) = gptr();
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16
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17 // Simple case: direct call.
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18 __asm call k;
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19 // CHECK: calll _k
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20
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21 // Marginally harder: indirect calls, via dllimport or function pointer.
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22 __asm call r;
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23 // CHECK: calll *({{.*}})
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24 __asm call kimport;
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25 // CHECK: calll *({{.*}})
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26
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27 // Broken case: Call through a global function pointer.
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28 __asm call kptr;
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29 // CHECK: calll _kptr
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30 // CHECK-FIXME: calll *_kptr
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31 }
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32
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33 int bar() {
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34 // CHECK-LABEL: _bar:
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35 __asm jmp k;
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36 // CHECK: jmp _k
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37 }
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38
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39 int baz() {
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40 // CHECK-LABEL: _baz:
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41 __asm mov eax, k;
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42 // CHECK: movl _k, %eax
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43 __asm mov eax, kptr;
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44 // CHECK: movl _kptr, %eax
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45 }
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46
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47 // Test that this asm blob doesn't require more registers than available. This
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48 // has to be an LLVM code generation test.
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49
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50 void __declspec(naked) naked() {
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51 __asm pusha
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52 __asm call k
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53 __asm popa
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54 __asm ret
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55 // CHECK-LABEL: _naked:
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56 // CHECK: pushal
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57 // CHECK-NEXT: calll _k
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58 // CHECK-NEXT: popal
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59 // CHECK-NEXT: retl
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60 }
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