174 lines
7.9 KiB
LLVM
174 lines
7.9 KiB
LLVM
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; RUN: opt -S -analyze -scalar-evolution -loop-deletion -scalar-evolution -verify-scev < %s -enable-new-pm=0 | FileCheck %s --check-prefix=SCEV-EXPRS
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; RUN: opt -S -passes='print<scalar-evolution>,loop-deletion,print<scalar-evolution>' -verify-scev < %s 2>&1 | FileCheck %s --check-prefix=SCEV-EXPRS
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; RUN: opt -S -loop-deletion < %s | FileCheck %s --check-prefix=IR-AFTER-TRANSFORM
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; RUN: opt -S -indvars -loop-deletion -indvars < %s | FileCheck %s --check-prefix=ORIGINAL-CRASH
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; Checking for a crash. Loop-deletion would change the loop
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; disposition of an instruction, but not update SCEV.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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define void @pr27570() {
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; IR-AFTER-TRANSFORM-LABEL: @pr27570(
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; ORIGINAL-CRASH: @pr27570(
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entry:
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br label %for.cond
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for.cond: ; preds = %for.cond14, %entry
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%f.0 = phi i32 [ 20, %entry ], [ 0, %for.cond14 ]
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br label %for.body
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for.body: ; preds = %for.inc11, %for.cond
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; IR-AFTER-TRANSFORM: for.body:
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; IR-AFTER-TRANSFORM: %cmp = icmp eq i32 %val, -1
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; IR-AFTER-TRANSFORM: %conv7 = zext i1 %cmp to i32
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; IR-AFTER-TRANSFORM: for.body6:
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; SCEV-EXPRS: %conv7 = zext i1 %cmp to i32
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; SCEV-EXPRS: %conv7 = zext i1 %cmp to i32
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; SCEV-EXPRS-NEXT: --> {{.*}} LoopDispositions: { %for.body: Variant, %for.cond: Variant, %for.body6: Invariant }
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%val = phi i32 [ -20, %for.cond ], [ %inc12, %for.inc11 ]
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%g.040 = phi i32 [ -20, %for.cond ], [ %and.lcssa, %for.inc11 ]
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br label %for.body6
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for.body6: ; preds = %for.body6, %for.body
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%h.039 = phi i32 [ 1, %for.body ], [ %inc, %for.body6 ]
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%g.138 = phi i32 [ %g.040, %for.body ], [ %and, %for.body6 ]
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%cmp = icmp eq i32 %val, -1
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%conv7 = zext i1 %cmp to i32
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%add.i = add nsw i32 %conv7, %h.039
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%sext = shl i32 %add.i, 24
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%conv8 = ashr exact i32 %sext, 24
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%cmp9 = icmp eq i32 %conv8, %f.0
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%conv10 = zext i1 %cmp9 to i32
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%and = and i32 %conv10, %g.138
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%inc = add i32 %h.039, 1
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%exit = icmp eq i32 %inc, 20000
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br i1 %exit, label %for.inc11, label %for.body6
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for.inc11: ; preds = %for.body6
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%and.lcssa = phi i32 [ %and, %for.body6 ]
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call void @sideeffect(i32 %and.lcssa)
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%inc12 = add nsw i32 %val, 1
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%tobool = icmp eq i32 %inc12, 0
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br i1 %tobool, label %for.cond14, label %for.body
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for.cond14: ; preds = %for.cond14, %for.inc11
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br i1 undef, label %for.cond, label %for.cond14
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}
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declare void @sideeffect(i32)
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; LoopDeletion removes the loop %for.body7.1. Make sure %inc.lcssa.1 in the loop
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; exit block is correctly invalidated.
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define void @test2(double* %bx, i64 %by) local_unnamed_addr align 2 {
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; IR-AFTER-TRANSFORM-LABEL: @test2(
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; IR-AFTER-TRANSFORM-NOT: for.body7.1:
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; SCEV-EXPRS-LABEL: test2
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; SCEV-EXPRS: %inc.lcssa.1 = phi i64 [ undef, %for.body7.preheader.1 ]
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; SCEV-EXPRS-NEXT: --> undef
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entry:
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%cmp = icmp sgt i64 %by, 0
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br label %for.cond.preheader
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for.cond.preheader: ; preds = %entry
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br i1 %cmp, label %for.cond5.preheader.lr.ph, label %for.end14
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for.cond5.preheader.lr.ph: ; preds = %for.cond.preheader
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br label %for.cond5.preheader
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for.cond.loopexit.loopexit: ; preds = %for.body10
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%inc11.lcssa = phi i64 [ %inc11, %for.body10 ]
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br label %for.cond.loopexit
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for.cond.loopexit: ; preds = %for.cond8.preheader, %for.cond.loopexit.loopexit
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%ca.3.lcssa = phi i64 [ %ca.2.lcssa, %for.cond8.preheader ], [ %inc11.lcssa, %for.cond.loopexit.loopexit ]
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br i1 %cmp, label %for.cond5.preheader, label %for.end14.loopexit
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for.cond5.preheader: ; preds = %for.cond.loopexit, %for.cond5.preheader.lr.ph
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%ca.19 = phi i64 [ 0, %for.cond5.preheader.lr.ph ], [ %ca.3.lcssa, %for.cond.loopexit ]
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br i1 false, label %for.cond8.preheader, label %for.body7.preheader
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for.body7.preheader: ; preds = %for.cond5.preheader
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br label %for.body7
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for.cond8.preheader.loopexit: ; preds = %for.body7
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%inc.lcssa = phi i64 [ %inc, %for.body7 ]
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br label %for.cond8.preheader
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for.cond8.preheader: ; preds = %for.cond8.preheader.loopexit, %for.cond5.preheader
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%ca.2.lcssa = phi i64 [ %ca.19, %for.cond5.preheader ], [ %inc.lcssa, %for.cond8.preheader.loopexit ]
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br i1 true, label %for.body10.preheader, label %for.cond.loopexit
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for.body10.preheader: ; preds = %for.cond8.preheader
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br label %for.body10
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for.body7: ; preds = %for.body7, %for.body7.preheader
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%ca.26 = phi i64 [ %inc, %for.body7 ], [ %ca.19, %for.body7.preheader ]
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%inc = add nsw i64 %ca.26, 1
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%arrayidx = getelementptr inbounds double, double* %bx, i64 %ca.26
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store double 0.000000e+00, double* %arrayidx, align 8
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br i1 false, label %for.cond8.preheader.loopexit, label %for.body7
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for.body10: ; preds = %for.body10, %for.body10.preheader
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%ca.37 = phi i64 [ %inc11, %for.body10 ], [ %ca.2.lcssa, %for.body10.preheader ]
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%inc11 = add nsw i64 %ca.37, 1
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br i1 true, label %for.body10, label %for.cond.loopexit.loopexit
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for.end14.loopexit: ; preds = %for.cond.loopexit
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br label %for.end14
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for.end14: ; preds = %for.end14.loopexit, %for.cond.preheader
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br i1 %cmp, label %for.cond5.preheader.lr.ph.1, label %for.end14.1
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for.cond5.preheader.lr.ph.1: ; preds = %for.end14
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br label %for.cond5.preheader.1
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for.cond5.preheader.1: ; preds = %for.cond.loopexit.1, %for.cond5.preheader.lr.ph.1
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%ca.19.1 = phi i64 [ 0, %for.cond5.preheader.lr.ph.1 ], [ %ca.3.lcssa.1, %for.cond.loopexit.1 ]
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br i1 true, label %for.cond8.preheader.1, label %for.body7.preheader.1
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for.body7.preheader.1: ; preds = %for.cond5.preheader.1
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br label %for.body7.1
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for.body7.1: ; preds = %for.body7.1, %for.body7.preheader.1
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%ca.26.1 = phi i64 [ %inc.1, %for.body7.1 ], [ %ca.19.1, %for.body7.preheader.1 ]
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%inc.1 = add nsw i64 %ca.26.1, 1
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%arrayidx.1 = getelementptr inbounds double, double* %bx, i64 %ca.26.1
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store double 0.000000e+00, double* %arrayidx.1, align 8
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br i1 true, label %for.cond8.preheader.loopexit.1, label %for.body7.1
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for.cond8.preheader.loopexit.1: ; preds = %for.body7.1
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%inc.lcssa.1 = phi i64 [ %inc.1, %for.body7.1 ]
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br label %for.cond8.preheader.1
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for.cond8.preheader.1: ; preds = %for.cond8.preheader.loopexit.1, %for.cond5.preheader.1
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%ca.2.lcssa.1 = phi i64 [ %ca.19.1, %for.cond5.preheader.1 ], [ %inc.lcssa.1, %for.cond8.preheader.loopexit.1 ]
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br i1 false, label %for.body10.preheader.1, label %for.cond.loopexit.1
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for.body10.preheader.1: ; preds = %for.cond8.preheader.1
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br label %for.body10.1
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for.body10.1: ; preds = %for.body10.1, %for.body10.preheader.1
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%ca.37.1 = phi i64 [ %inc11.1, %for.body10.1 ], [ %ca.2.lcssa.1, %for.body10.preheader.1 ]
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%inc11.1 = add nsw i64 %ca.37.1, 1
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br i1 false, label %for.body10.1, label %for.cond.loopexit.loopexit.1
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for.cond.loopexit.loopexit.1: ; preds = %for.body10.1
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%inc11.lcssa.1 = phi i64 [ %inc11.1, %for.body10.1 ]
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br label %for.cond.loopexit.1
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for.cond.loopexit.1: ; preds = %for.cond.loopexit.loopexit.1, %for.cond8.preheader.1
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%ca.3.lcssa.1 = phi i64 [ %ca.2.lcssa.1, %for.cond8.preheader.1 ], [ %inc11.lcssa.1, %for.cond.loopexit.loopexit.1 ]
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br i1 %cmp, label %for.cond5.preheader.1, label %for.end14.loopexit.1
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for.end14.loopexit.1: ; preds = %for.cond.loopexit.1
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br label %for.end14.1
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for.end14.1: ; preds = %for.end14.loopexit.1, %for.end14
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ret void
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}
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