1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=instcombine -S | FileCheck %s 3 4; PR49778: this should not be folded to 0. 5define i32 @src(i1 %x2) { 6; CHECK-LABEL: @src( 7; CHECK-NEXT: [[X13:%.*]] = zext i1 [[X2:%.*]] to i32 8; CHECK-NEXT: [[_7:%.*]] = shl nsw i32 -1, [[X13]] 9; CHECK-NEXT: [[MASK:%.*]] = xor i32 [[_7]], -1 10; CHECK-NEXT: [[_8:%.*]] = and i32 [[MASK]], [[X13]] 11; CHECK-NEXT: [[_9:%.*]] = shl nuw nsw i32 [[_8]], [[X13]] 12; CHECK-NEXT: ret i32 [[_9]] 13; 14 %x13 = zext i1 %x2 to i32 15 %_7 = shl i32 4294967295, %x13 16 %mask = xor i32 %_7, 4294967295 17 %_8 = and i32 %mask, %x13 18 %_9 = shl i32 %_8, %x13 19 ret i32 %_9 20} 21