1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 2; RUN: opt < %s -passes=instcombine -S | FileCheck %s 3 4target datalayout = "e-m:e-i64:64-n8:16:32:64" 5 6; Although i1 is not in the datalayout, we should treat it 7; as a legal type because it is a fundamental type in IR. 8; This means we should shrink the phi (sink the zexts). 9 10define i64 @sink_i1_casts(i1 %cond1, i1 %cond2, i1 %cond) { 11; CHECK-LABEL: define i64 @sink_i1_casts( 12; CHECK-SAME: i1 [[COND1:%.*]], i1 [[COND2:%.*]], i1 [[COND:%.*]]) { 13; CHECK-NEXT: [[ENTRY:.*]]: 14; CHECK-NEXT: br i1 [[COND]], label %[[IF:.*]], label %[[END:.*]] 15; CHECK: [[IF]]: 16; CHECK-NEXT: br label %[[END]] 17; CHECK: [[END]]: 18; CHECK-NEXT: [[PHI_IN1:%.*]] = phi i1 [ [[COND1]], %[[ENTRY]] ], [ [[COND2]], %[[IF]] ] 19; CHECK-NEXT: [[PHI_IN:%.*]] = zext i1 [[PHI_IN1]] to i64 20; CHECK-NEXT: ret i64 [[PHI_IN]] 21; 22entry: 23 %z1 = zext i1 %cond1 to i64 24 br i1 %cond, label %if, label %end 25 26if: 27 %z2 = zext i1 %cond2 to i64 28 br label %end 29 30end: 31 %phi = phi i64 [ %z1, %entry ], [ %z2, %if ] 32 ret i64 %phi 33} 34 35