1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes=ipsccp -S %s | FileCheck %s
4 define i1 @range_from_mul_nuw_nsw(i32 %a) {
5 ; CHECK-LABEL: @range_from_mul_nuw_nsw(
7 ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[A:%.*]], 0
8 ; CHECK-NEXT: br i1 [[CMP]], label [[THEN:%.*]], label [[ELSE:%.*]]
10 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[A]], 10000
11 ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[MUL]], -5000
12 ; CHECK-NEXT: ret i1 false
14 ; CHECK-NEXT: ret i1 false
17 %cmp = icmp ne i32 %a, 0
18 br i1 %cmp, label %then, label %else
20 %mul = mul nuw nsw i32 %a, 10000 ; Refined range via mul_nuw: [10000, 0)
21 %add = add nsw i32 %mul, -5000 ; Range: [5000, UINT_MAX - 5000 + 1)
22 %cond = icmp ult i32 %add, 4999