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