1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt < %s -passes=ipsccp -S | FileCheck %s 3 4; Tests from PR79696 5 6define i1 @constant_range_xor(i64 %a) { 7; CHECK-LABEL: define i1 @constant_range_xor( 8; CHECK-SAME: i64 [[A:%.*]]) { 9; CHECK-NEXT: entry: 10; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A]], 8192 11; CHECK-NEXT: br i1 [[CMP]], label [[THEN:%.*]], label [[ELSE:%.*]] 12; CHECK: then: 13; CHECK-NEXT: [[CTLZ:%.*]] = call i64 @llvm.ctlz.i64(i64 [[A]], i1 true) 14; CHECK-NEXT: [[CONV:%.*]] = xor i64 [[CTLZ]], 63 15; CHECK-NEXT: ret i1 false 16; CHECK: else: 17; CHECK-NEXT: ret i1 false 18; 19entry: 20 %cmp = icmp ugt i64 %a, 8192 21 br i1 %cmp, label %then, label %else 22then: 23 %ctlz = call i64 @llvm.ctlz.i64(i64 %a, i1 true) ;[0, 50] 24 %conv = xor i64 %ctlz, 63 ;[13, 63] 25 %cmp1 = icmp ult i64 %conv, 13 26 ret i1 %cmp1 27else: 28 ret i1 false 29} 30 31define i1 @constant_range_xor_negative(i64 %a) { 32; CHECK-LABEL: define i1 @constant_range_xor_negative( 33; CHECK-SAME: i64 [[A:%.*]]) { 34; CHECK-NEXT: entry: 35; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A]], 8192 36; CHECK-NEXT: br i1 [[CMP]], label [[THEN:%.*]], label [[ELSE:%.*]] 37; CHECK: then: 38; CHECK-NEXT: [[CTLZ:%.*]] = call i64 @llvm.ctlz.i64(i64 [[A]], i1 true) 39; CHECK-NEXT: [[CONV:%.*]] = xor i64 [[CTLZ]], 62 40; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i64 [[CONV]], 13 41; CHECK-NEXT: ret i1 [[CMP1]] 42; CHECK: else: 43; CHECK-NEXT: ret i1 false 44; 45entry: 46 %cmp = icmp ugt i64 %a, 8192 47 br i1 %cmp, label %then, label %else 48then: 49 %ctlz = call i64 @llvm.ctlz.i64(i64 %a, i1 true) ;[0, 50] 50 %conv = xor i64 %ctlz, 62 ;[12, 63] 51 %cmp1 = icmp ult i64 %conv, 13 52 ret i1 %cmp1 53else: 54 ret i1 false 55} 56