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annotate test/CodeGen/X86/fp-stack-2results.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 95c75e76d11b
children 803732b1fca8
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -march=x86 | grep fldz
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2 ; RUN: llc < %s -march=x86-64 | grep fld1
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3
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4 %0 = type { x86_fp80, x86_fp80 }
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5
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6 ; This is basically this code on x86-64:
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7 ; _Complex long double test() { return 1.0; }
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8 define %0 @test() {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 %A = fpext double 1.0 to x86_fp80
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10 %B = fpext double 0.0 to x86_fp80
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11 %mrv = insertvalue %0 undef, x86_fp80 %A, 0
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12 %mrv1 = insertvalue %0 %mrv, x86_fp80 %B, 1
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13 ret %0 %mrv1
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14 }
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16
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17 ;_test2:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 ; fld1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 ; fld %st(0)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 ; ret
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 define %0 @test2() {
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22 %A = fpext double 1.0 to x86_fp80
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23 %mrv = insertvalue %0 undef, x86_fp80 %A, 0
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24 %mrv1 = insertvalue %0 %mrv, x86_fp80 %A, 1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25 ret %0 %mrv1
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26 }
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28 ; Uses both values.
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29 define void @call1(x86_fp80 *%P1, x86_fp80 *%P2) {
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30 %a = call %0 @test()
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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31 %b = extractvalue %0 %a, 0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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32 store x86_fp80 %b, x86_fp80* %P1
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33
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34 %c = extractvalue %0 %a, 1
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35 store x86_fp80 %c, x86_fp80* %P2
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36 ret void
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37 }
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38
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39 ; Uses both values, requires fxch
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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40 define void @call2(x86_fp80 *%P1, x86_fp80 *%P2) {
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41 %a = call %0 @test()
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42 %b = extractvalue %0 %a, 1
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43 store x86_fp80 %b, x86_fp80* %P1
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44
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45 %c = extractvalue %0 %a, 0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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46 store x86_fp80 %c, x86_fp80* %P2
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47 ret void
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48 }
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49
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50 ; Uses ST(0), ST(1) is dead but must be popped.
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51 define void @call3(x86_fp80 *%P1, x86_fp80 *%P2) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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52 %a = call %0 @test()
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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53 %b = extractvalue %0 %a, 0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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54 store x86_fp80 %b, x86_fp80* %P1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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55 ret void
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56 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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58 ; Uses ST(1), ST(0) is dead and must be popped.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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59 define void @call4(x86_fp80 *%P1, x86_fp80 *%P2) {
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60 %a = call %0 @test()
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61
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62 %c = extractvalue %0 %a, 1
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63 store x86_fp80 %c, x86_fp80* %P2
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64 ret void
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65 }
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66