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annotate llvm/test/Transforms/LICM/lcssa-ssa-promoter.ll @ 207:2e18cbf3894f

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LLVM12
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 08 Jun 2021 06:07:14 +0900
parents 1d019706d866
children c4bab56944e8
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rev   line source
207
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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1 ; RUN: opt -S -basic-aa -licm < %s | FileCheck %s
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2 ; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' -S %s| FileCheck %s
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3 ;
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4 ; Manually validate LCSSA form is preserved even after SSAUpdater is used to
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5 ; promote things in the loop bodies.
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6
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7 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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8 target triple = "x86_64-unknown-linux-gnu"
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9
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10 @x = common global i32 0, align 4
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11 @y = common global i32 0, align 4
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12
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13 define void @PR18688() {
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14 ; CHECK-LABEL: @PR18688(
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15
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16 entry:
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17 br i1 undef, label %return, label %outer.preheader
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18
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19 outer.preheader:
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20 br label %outer.header
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21 ; CHECK: outer.preheader:
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22 ; CHECK: br label %outer.header
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23
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24 outer.header:
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25 store i32 0, i32* @x, align 4
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26 br i1 undef, label %outer.latch, label %inner.preheader
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27 ; CHECK: outer.header:
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28 ; CHECK-NEXT: br i1 undef, label %outer.latch, label %inner.preheader
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29
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30 inner.preheader:
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31 br label %inner.header
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32 ; CHECK: inner.preheader:
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33 ; CHECK-NEXT: br label %inner.header
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34
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35 inner.header:
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36 br i1 undef, label %inner.body.rhs, label %inner.latch
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37 ; CHECK: inner.header:
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38 ; CHECK-NEXT: %[[PHI0:[^,]+]] = phi i32 [ %{{[^,]+}}, %inner.latch ], [ 0, %inner.preheader ]
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39 ; CHECK-NEXT: br i1 undef, label %inner.body.rhs, label %inner.latch
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40
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41 inner.body.rhs:
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42 store i32 0, i32* @x, align 4
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43 br label %inner.latch
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44 ; CHECK: inner.body.rhs:
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45 ; CHECK-NEXT: br label %inner.latch
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46
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47 inner.latch:
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48 %y_val = load i32, i32* @y, align 4
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49 %icmp = icmp eq i32 %y_val, 0
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50 br i1 %icmp, label %inner.exit, label %inner.header
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51 ; CHECK: inner.latch:
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52 ; CHECK-NEXT: %[[PHI1:[^,]+]] = phi i32 [ 0, %inner.body.rhs ], [ %[[PHI0]], %inner.header ]
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53 ; CHECK-NEXT: br i1 %{{[^,]+}}, label %inner.exit, label %inner.header
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54
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55 inner.exit:
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56 br label %outer.latch
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57 ; CHECK: inner.exit:
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58 ; CHECK-NEXT: %[[INNER_LCSSA:[^,]+]] = phi i32 [ %[[PHI1]], %inner.latch ]
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59 ; CHECK-NEXT: br label %outer.latch
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60
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61 outer.latch:
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62 br i1 undef, label %outer.exit, label %outer.header
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63 ; CHECK: outer.latch:
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64 ; CHECK-NEXT: %[[PHI2:[^,]+]] = phi i32 [ %[[INNER_LCSSA]], %inner.exit ], [ 0, %outer.header ]
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65 ; CHECK-NEXT: br i1 {{.*}}, label %outer.exit, label %outer.header
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66
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67 outer.exit:
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68 br label %return
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69 ; CHECK: outer.exit:
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70 ; CHECK-NEXT: %[[OUTER_LCSSA:[^,]+]] = phi i32 [ %[[PHI2]], %outer.latch ]
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71 ; CHECK-NEXT: store i32 %[[OUTER_LCSSA]]
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72 ; CHECK-NEXT: br label %return
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73
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74 return:
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75 ret void
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76 }
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77