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annotate test/CodeGen/X86/seh-safe-div-win32.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents
children 7d135dc70f03
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95
afa8332a0e37 LLVM 3.8
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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1 ; RUN: llc -mtriple i686-pc-windows-msvc < %s | FileCheck %s
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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2
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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3 ; This test case is also intended to be run manually as a complete functional
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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4 ; test. It should link, print something, and exit zero rather than crashing.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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5 ; It is the hypothetical lowering of a C source program that looks like:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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7 ; int safe_div(int *n, int *d) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 ; int r;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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9 ; __try {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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10 ; __try {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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11 ; r = *n / *d;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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12 ; } __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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13 ; puts("EXCEPTION_ACCESS_VIOLATION");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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14 ; r = -1;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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15 ; }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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16 ; } __except(GetExceptionCode() == EXCEPTION_INT_DIVIDE_BY_ZERO) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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17 ; puts("EXCEPTION_INT_DIVIDE_BY_ZERO");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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18 ; r = -2;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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19 ; }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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20 ; return r;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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21 ; }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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22
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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23 @str1 = internal constant [27 x i8] c"EXCEPTION_ACCESS_VIOLATION\00"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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24 @str2 = internal constant [29 x i8] c"EXCEPTION_INT_DIVIDE_BY_ZERO\00"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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25
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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26 define i32 @safe_div(i32* %n, i32* %d) personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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27 entry:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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28 %r = alloca i32, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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29 store i32 42, i32* %r
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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30 invoke void @try_body(i32* %r, i32* %n, i32* %d)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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31 to label %__try.cont unwind label %lpad0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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32
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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33 lpad0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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34 %p0 = catchpad [i8* bitcast (i32 ()* @safe_div_filt0 to i8*)]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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35 to label %handler0 unwind label %endpad0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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36
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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37 handler0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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38 call void @puts(i8* getelementptr ([27 x i8], [27 x i8]* @str1, i32 0, i32 0))
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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39 store i32 -1, i32* %r, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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40 catchret %p0 to label %__try.cont
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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41
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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42 endpad0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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43 catchendpad unwind label %lpad1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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44
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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45 lpad1:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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46 %p1 = catchpad [i8* bitcast (i32 ()* @safe_div_filt1 to i8*)]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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47 to label %handler1 unwind label %endpad1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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48
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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49 handler1:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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50 call void @puts(i8* getelementptr ([29 x i8], [29 x i8]* @str2, i32 0, i32 0))
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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51 store i32 -2, i32* %r, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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52 catchret %p1 to label %__try.cont
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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53
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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54 endpad1:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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55 catchendpad unwind to caller
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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56
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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57 __try.cont:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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58 %safe_ret = load i32, i32* %r, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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59 ret i32 %safe_ret
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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60 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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61
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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62 ; Normal path code
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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63
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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64 ; CHECK: {{^}}_safe_div:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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65 ; CHECK: movl $42, [[rloc:.*\(%ebp\)]]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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66 ; CHECK: leal [[rloc]],
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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67 ; CHECK: calll _try_body
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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68 ; CHECK: [[cont_bb:LBB0_[0-9]+]]:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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69 ; CHECK: movl [[rloc]], %eax
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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70 ; CHECK: retl
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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71
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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72 ; Landing pad code
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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73
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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74 ; CHECK: [[lpad0:LBB0_[0-9]+]]: # %lpad0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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75 ; Restore SP
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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76 ; CHECK: movl {{.*}}(%ebp), %esp
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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77 ; CHECK: calll _puts
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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78 ; CHECK: jmp [[cont_bb]]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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79
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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80 ; CHECK: [[lpad1:LBB0_[0-9]+]]: # %lpad1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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81 ; Restore SP
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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82 ; CHECK: movl {{.*}}(%ebp), %esp
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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83 ; CHECK: calll _puts
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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84 ; CHECK: jmp [[cont_bb]]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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85
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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86 ; CHECK: .section .xdata,"dr"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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87 ; CHECK: L__ehtable$safe_div:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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88 ; CHECK-NEXT: .long -1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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89 ; CHECK-NEXT: .long _safe_div_filt1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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90 ; CHECK-NEXT: .long [[lpad1]]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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91 ; CHECK-NEXT: .long 0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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92 ; CHECK-NEXT: .long _safe_div_filt0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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93 ; CHECK-NEXT: .long [[lpad0]]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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94
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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95 define void @try_body(i32* %r, i32* %n, i32* %d) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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96 entry:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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97 %0 = load i32, i32* %n, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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98 %1 = load i32, i32* %d, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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99 %div = sdiv i32 %0, %1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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100 store i32 %div, i32* %r, align 4
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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101 ret void
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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102 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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103
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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104 ; The prototype of these filter functions is:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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105 ; int filter(EXCEPTION_POINTERS *eh_ptrs, void *rbp);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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106
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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107 ; The definition of EXCEPTION_POINTERS is:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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108 ; typedef struct _EXCEPTION_POINTERS {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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109 ; EXCEPTION_RECORD *ExceptionRecord;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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110 ; CONTEXT *ContextRecord;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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111 ; } EXCEPTION_POINTERS;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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112
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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113 ; The definition of EXCEPTION_RECORD is:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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114 ; typedef struct _EXCEPTION_RECORD {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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115 ; DWORD ExceptionCode;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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116 ; ...
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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117 ; } EXCEPTION_RECORD;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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118
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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119 define i32 @safe_div_filt0() {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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120 %ebp = call i8* @llvm.frameaddress(i32 1)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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121 %eh_ptrs.addr.i8 = getelementptr inbounds i8, i8* %ebp, i32 -20
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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122 %eh_ptrs.addr = bitcast i8* %eh_ptrs.addr.i8 to i32***
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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123 %eh_ptrs = load i32**, i32*** %eh_ptrs.addr
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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124 %eh_rec = load i32*, i32** %eh_ptrs
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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125 %eh_code = load i32, i32* %eh_rec
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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126 ; EXCEPTION_ACCESS_VIOLATION = 0xC0000005
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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127 %cmp = icmp eq i32 %eh_code, 3221225477
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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128 %filt.res = zext i1 %cmp to i32
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129 ret i32 %filt.res
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130 }
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131 define i32 @safe_div_filt1() {
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132 %ebp = call i8* @llvm.frameaddress(i32 1)
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133 %eh_ptrs.addr.i8 = getelementptr inbounds i8, i8* %ebp, i32 -20
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134 %eh_ptrs.addr = bitcast i8* %eh_ptrs.addr.i8 to i32***
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135 %eh_ptrs = load i32**, i32*** %eh_ptrs.addr
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136 %eh_rec = load i32*, i32** %eh_ptrs
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137 %eh_code = load i32, i32* %eh_rec
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138 ; EXCEPTION_INT_DIVIDE_BY_ZERO = 0xC0000094
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139 %cmp = icmp eq i32 %eh_code, 3221225620
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140 %filt.res = zext i1 %cmp to i32
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141 ret i32 %filt.res
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142 }
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143
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144 @str_result = internal constant [21 x i8] c"safe_div result: %d\0A\00"
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145
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146 define i32 @main() {
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147 %d.addr = alloca i32, align 4
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148 %n.addr = alloca i32, align 4
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149
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150 store i32 10, i32* %n.addr, align 4
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151 store i32 2, i32* %d.addr, align 4
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152 %r1 = call i32 @safe_div(i32* %n.addr, i32* %d.addr)
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153 call void (i8*, ...) @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r1)
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diff changeset
154
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155 store i32 10, i32* %n.addr, align 4
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156 store i32 0, i32* %d.addr, align 4
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157 %r2 = call i32 @safe_div(i32* %n.addr, i32* %d.addr)
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158 call void (i8*, ...) @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r2)
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159
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160 %r3 = call i32 @safe_div(i32* %n.addr, i32* null)
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161 call void (i8*, ...) @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r3)
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162 ret i32 0
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163 }
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diff changeset
164
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165 declare i32 @_except_handler3(...)
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166 declare i32 @llvm.eh.typeid.for(i8*) readnone nounwind
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167 declare void @puts(i8*)
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168 declare void @printf(i8*, ...)
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169 declare void @abort()
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170 declare i8* @llvm.frameaddress(i32)