summaryrefslogtreecommitdiffstats
path: root/llvm/test/CodeGen/X86/loop-strength-reduce-crash.ll
blob: b5be6fef52beae50c91c3db469c52afc490f4822 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
; RUN: opt -loop-reduce < %s -o /dev/null

; LSR doesn't actually do anything on this input; just check that it doesn't
; crash while building the compatible type for the IV (by virtue of using
; INT64_MAX as a constant in the loop).

target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"

define void @foo() {
entry:
  br label %for

for: 
  %0 = phi i64 [ %add, %for ], [ undef, %entry ]
  %next = phi i32 [ %inc, %for ], [ undef, %entry ]
  store i32 %next, i32* undef, align 4
  %add = add i64 %0, 9223372036854775807
  %inc = add nsw i32 %next, 1
  br i1 undef, label %exit, label %for

exit:
  store i64 %add, i64* undef
  ret void
}
OpenPOWER on IntegriCloud