; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -S -instcombine < %s | FileCheck %s define i64 @sel_false_val_is_a_masked_shl_of_true_val1(i32 %x, i64 %y) { ; CHECK-LABEL: @sel_false_val_is_a_masked_shl_of_true_val1( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 15 ; CHECK-NEXT: [[TMP2:%.*]] = shl nuw nsw i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP1]], 0 ; CHECK-NEXT: [[NARROW:%.*]] = select i1 [[TMP3]], i32 0, i32 [[TMP2]] ; CHECK-NEXT: [[TMP4:%.*]] = zext i32 [[NARROW]] to i64 ; CHECK-NEXT: [[TMP5:%.*]] = ashr i64 [[Y:%.*]], [[TMP4]] ; CHECK-NEXT: ret i64 [[TMP5]] ; %1 = and i32 %x, 15 %2 = shl nuw nsw i32 %1, 2 %3 = zext i32 %2 to i64 %4 = icmp eq i32 %1, 0 %5 = ashr i64 %y, %3 %6 = select i1 %4, i64 %y, i64 %5 ret i64 %6 } define i64 @sel_false_val_is_a_masked_shl_of_true_val2(i32 %x, i64 %y) { ; CHECK-LABEL: @sel_false_val_is_a_masked_shl_of_true_val2( ; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[X:%.*]], 2 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 60 ; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64 ; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 [[Y:%.*]], [[TMP3]] ; CHECK-NEXT: ret i64 [[TMP4]] ; %1 = and i32 %x, 15 %2 = shl nuw nsw i32 %1, 2 %3 = zext i32 %2 to i64 %4 = icmp eq i32 %2, 0 %5 = ashr i64 %y, %3 %6 = select i1 %4, i64 %y, i64 %5 ret i64 %6 } define i64 @sel_false_val_is_a_masked_lshr_of_true_val1(i32 %x, i64 %y) { ; CHECK-LABEL: @sel_false_val_is_a_masked_lshr_of_true_val1( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 60 ; CHECK-NEXT: [[TMP2:%.*]] = lshr exact i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP1]], 0 ; CHECK-NEXT: [[NARROW:%.*]] = select i1 [[TMP3]], i32 0, i32 [[TMP2]] ; CHECK-NEXT: [[TMP4:%.*]] = zext i32 [[NARROW]] to i64 ; CHECK-NEXT: [[TMP5:%.*]] = ashr i64 [[Y:%.*]], [[TMP4]] ; CHECK-NEXT: ret i64 [[TMP5]] ; %1 = and i32 %x, 60 %2 = lshr i32 %1, 2 %3 = zext i32 %2 to i64 %4 = icmp eq i32 %1, 0 %5 = ashr i64 %y, %3 %6 = select i1 %4, i64 %y, i64 %5 ret i64 %6 } define i64 @sel_false_val_is_a_masked_lshr_of_true_val2(i32 %x, i64 %y) { ; CHECK-LABEL: @sel_false_val_is_a_masked_lshr_of_true_val2( ; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[X:%.*]], 2 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 15 ; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64 ; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 [[Y:%.*]], [[TMP3]] ; CHECK-NEXT: ret i64 [[TMP4]] ; %1 = and i32 %x, 60 %2 = lshr i32 %1, 2 %3 = zext i32 %2 to i64 %4 = icmp eq i32 %2, 0 %5 = ashr i64 %y, %3 %6 = select i1 %4, i64 %y, i64 %5 ret i64 %6 } define i64 @sel_false_val_is_a_masked_ashr_of_true_val1(i32 %x, i64 %y) { ; CHECK-LABEL: @sel_false_val_is_a_masked_ashr_of_true_val1( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], -2147483588 ; CHECK-NEXT: [[TMP2:%.*]] = ashr exact i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP1]], 0 ; CHECK-NEXT: [[NARROW:%.*]] = select i1 [[TMP3]], i32 0, i32 [[TMP2]] ; CHECK-NEXT: [[TMP4:%.*]] = zext i32 [[NARROW]] to i64 ; CHECK-NEXT: [[TMP5:%.*]] = ashr i64 [[Y:%.*]], [[TMP4]] ; CHECK-NEXT: ret i64 [[TMP5]] ; %1 = and i32 %x, -2147483588 %2 = ashr i32 %1, 2 %3 = zext i32 %2 to i64 %4 = icmp eq i32 %1, 0 %5 = ashr i64 %y, %3 %6 = select i1 %4, i64 %y, i64 %5 ret i64 %6 } define i64 @sel_false_val_is_a_masked_ashr_of_true_val2(i32 %x, i64 %y) { ; CHECK-LABEL: @sel_false_val_is_a_masked_ashr_of_true_val2( ; CHECK-NEXT: [[TMP1:%.*]] = ashr i32 [[X:%.*]], 2 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], -536870897 ; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64 ; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 [[Y:%.*]], [[TMP3]] ; CHECK-NEXT: ret i64 [[TMP4]] ; %1 = and i32 %x, -2147483588 %2 = ashr i32 %1, 2 %3 = zext i32 %2 to i64 %4 = icmp eq i32 %2, 0 %5 = ashr i64 %y, %3 %6 = select i1 %4, i64 %y, i64 %5 ret i64 %6 }