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annotate test/CodeGen/ARM/machine-licm.ll @ 0:95c75e76d11b

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children e4204d083e25
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s -check-prefix=THUMB
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2 ; RUN: llc < %s -mtriple=arm-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s -check-prefix=ARM
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 ; RUN: llc < %s -mtriple=arm-apple-darwin -relocation-model=pic -disable-fp-elim -mattr=+v6t2 | FileCheck %s -check-prefix=MOVT
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 ; rdar://7353541
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 ; rdar://7354376
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ; rdar://8887598
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 ; The generated code is no where near ideal. It's not recognizing the two
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 ; constantpool entries being loaded can be merged into one.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 @GV = external global i32 ; <i32*> [#uses=2]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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12
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 define void @t(i32* nocapture %vals, i32 %c) nounwind {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 entry:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 ; ARM-LABEL: t:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 ; ARM: ldr [[REGISTER_1:r[0-9]+]], LCPI0_0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 ; Unfortunately currently ARM codegen doesn't cse the ldr from constantpool.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 ; The issue is it can be read by an "add pc" or a "ldr [pc]" so it's messy
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 ; to add the pseudo instructions to make sure they are CSE'ed at the same
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 ; time as the "ldr cp".
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 ; ARM: ldr r{{[0-9]+}}, LCPI0_1
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 ; ARM: LPC0_0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 ; ARM: ldr r{{[0-9]+}}, [pc, [[REGISTER_1]]]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 ; ARM: ldr r{{[0-9]+}}, [r{{[0-9]+}}]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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26 ; MOVT-LABEL: t:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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27 ; MOVT: movw [[REGISTER_2:r[0-9]+]], :lower16:(L_GV$non_lazy_ptr-(LPC0_0+8))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 ; MOVT: movt [[REGISTER_2]], :upper16:(L_GV$non_lazy_ptr-(LPC0_0+8))
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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29 ; MOVT: LPC0_0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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30 ; MOVT: ldr r{{[0-9]+}}, [pc, [[REGISTER_2]]]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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31 ; MOVT: ldr r{{[0-9]+}}, [r{{[0-9]+}}]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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32
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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33 ; THUMB-LABEL: t:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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34 %0 = icmp eq i32 %c, 0 ; <i1> [#uses=1]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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35 br i1 %0, label %return, label %bb.nph
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36
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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37 bb.nph: ; preds = %entry
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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38 ; ARM: LCPI0_0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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39 ; ARM: LCPI0_1:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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40 ; ARM: .section
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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41
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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42 ; THUMB: BB#1
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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43 ; THUMB: ldr r2, LCPI0_0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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44 ; THUMB: add r2, pc
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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45 ; THUMB: ldr r{{[0-9]+}}, [r2]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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46 ; THUMB: LBB0_2
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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47 ; THUMB: LCPI0_0:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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48 ; THUMB-NOT: LCPI0_1:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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49 ; THUMB: .section
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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50 %.pre = load i32* @GV, align 4 ; <i32> [#uses=1]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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51 br label %bb
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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52
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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53 bb: ; preds = %bb, %bb.nph
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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54 %1 = phi i32 [ %.pre, %bb.nph ], [ %3, %bb ] ; <i32> [#uses=1]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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55 %i.03 = phi i32 [ 0, %bb.nph ], [ %4, %bb ] ; <i32> [#uses=2]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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56 %scevgep = getelementptr i32* %vals, i32 %i.03 ; <i32*> [#uses=1]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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57 %2 = load i32* %scevgep, align 4 ; <i32> [#uses=1]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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58 %3 = add nsw i32 %1, %2 ; <i32> [#uses=2]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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59 store i32 %3, i32* @GV, align 4
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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60 %4 = add i32 %i.03, 1 ; <i32> [#uses=2]
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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61 %exitcond = icmp eq i32 %4, %c ; <i1> [#uses=1]
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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62 br i1 %exitcond, label %return, label %bb
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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63
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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64 return: ; preds = %bb, %entry
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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65 ret void
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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66 }