lsr-overflow.ll
1.51 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -lsr-complexity-limit=50 -loop-reduce -S %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
define void @overflow1(i64 %a) {
; CHECK-LABEL: @overflow1(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[A:%.*]], -1
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[A]], -9223372036854775808
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i64 [ [[LSR_IV_NEXT2:%.*]], [[BB1]] ], [ [[TMP1]], [[BB:%.*]] ]
; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[BB1]] ], [ [[TMP0]], [[BB]] ]
; CHECK-NEXT: [[TMP4:%.*]] = icmp ne i64 [[LSR_IV1]], 0
; CHECK-NEXT: [[TMP5:%.*]] = and i1 [[TMP4]], true
; CHECK-NEXT: [[LSR_IV_NEXT]] = add i64 [[LSR_IV]], 1
; CHECK-NEXT: [[LSR_IV_NEXT2]] = add i64 [[LSR_IV1]], 1
; CHECK-NEXT: br i1 [[TMP5]], label [[BB1]], label [[BB7:%.*]]
; CHECK: bb7:
; CHECK-NEXT: [[TMP9:%.*]] = and i64 [[LSR_IV_NEXT]], 1
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[TMP9]], 0
; CHECK-NEXT: unreachable
;
bb:
br label %bb1
bb1: ; preds = %bb1, %bb
%tmp = phi i64 [ %a, %bb ], [ %tmp6, %bb1 ]
%tmp4 = icmp ne i64 %tmp, -9223372036854775808
%tmp5 = and i1 %tmp4, 1
%tmp6 = add i64 %tmp, 1
br i1 %tmp5, label %bb1, label %bb7
bb7: ; preds = %bb1
%tmp9 = and i64 %tmp, 1
%tmp10 = icmp eq i64 %tmp9, 0
unreachable
}