1 ; RUN: opt -S -analyze -scalar-evolution -loop-deletion -scalar-evolution < %s | FileCheck %s --check-prefix=SCEV-EXPRS
2 ; RUN: opt -S -loop-deletion < %s | FileCheck %s --check-prefix=IR-AFTER-TRANSFORM
3 ; RUN: opt -S -indvars -loop-deletion -indvars < %s | FileCheck %s --check-prefix=ORIGINAL-CRASH
5 ; Checking for a crash. Loop-deletion would change the loop
6 ; disposition of an instruction, but not update SCEV.
8 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
9 target triple = "x86_64-apple-macosx10.11.0"
11 define void @pr27570() {
12 ; IR-AFTER-TRANSFORM-LABEL: @pr27570(
13 ; ORIGINAL-CRASH: @pr27570(
17 for.cond: ; preds = %for.cond14, %entry
18 %f.0 = phi i32 [ 20, %entry ], [ 0, %for.cond14 ]
21 for.body: ; preds = %for.inc11, %for.cond
22 ; IR-AFTER-TRANSFORM: for.body:
23 ; IR-AFTER-TRANSFORM: %cmp = icmp eq i32 %val, -1
24 ; IR-AFTER-TRANSFORM: %conv7 = zext i1 %cmp to i32
25 ; IR-AFTER-TRANSFORM: for.body6:
27 ; SCEV-EXPRS: %conv7 = zext i1 %cmp to i32
28 ; SCEV-EXPRS: %conv7 = zext i1 %cmp to i32
29 ; SCEV-EXPRS-NEXT: --> {{.*}} LoopDispositions: { %for.body: Variant, %for.cond: Variant, %for.body6: Invariant }
30 %val = phi i32 [ -20, %for.cond ], [ %inc12, %for.inc11 ]
31 %g.040 = phi i32 [ -20, %for.cond ], [ %and.lcssa, %for.inc11 ]
34 for.body6: ; preds = %for.body6, %for.body
35 %h.039 = phi i32 [ 1, %for.body ], [ %inc, %for.body6 ]
36 %g.138 = phi i32 [ %g.040, %for.body ], [ %and, %for.body6 ]
37 %cmp = icmp eq i32 %val, -1
38 %conv7 = zext i1 %cmp to i32
39 %add.i = add nsw i32 %conv7, %h.039
40 %sext = shl i32 %add.i, 24
41 %conv8 = ashr exact i32 %sext, 24
42 %cmp9 = icmp eq i32 %conv8, %f.0
43 %conv10 = zext i1 %cmp9 to i32
44 %and = and i32 %conv10, %g.138
45 %inc = add i32 %h.039, 1
46 br i1 undef, label %for.inc11, label %for.body6
48 for.inc11: ; preds = %for.body6
49 %and.lcssa = phi i32 [ %and, %for.body6 ]
50 %inc12 = add nsw i32 %val, 1
51 %tobool = icmp eq i32 %inc12, 0
52 br i1 %tobool, label %for.cond14, label %for.body
54 for.cond14: ; preds = %for.cond14, %for.inc11
55 br i1 undef, label %for.cond, label %for.cond14