; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -S -instcombine < %s | FileCheck %s define i64 @test_shl_nuw_nsw__all_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nuw_nsw__all_are_safe( ; 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 @test_shl_nuw__all_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nuw__all_are_safe( ; 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 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 @test_shl_nsw__all_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nsw__all_are_safe( ; 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 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 @test_shl__all_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl__all_are_safe( ; 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 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 @test_shl_nuw_nsw__nuw_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nuw_nsw__nuw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 1073741822 ; 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, 1073741822 %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 @test_shl_nuw__nuw_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nuw__nuw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 1073741822 ; CHECK-NEXT: [[TMP2:%.*]] = shl nuw 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, 1073741822 %2 = shl nuw 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 @test_shl_nsw__nuw_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nsw__nuw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 1073741822 ; 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, 1073741822 %2 = shl 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 @test_shl__nuw_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl__nuw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 1073741822 ; CHECK-NEXT: [[TMP2:%.*]] = shl nuw 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, 1073741822 %2 = shl 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 i32 @test_shl_nuw_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_shl_nuw_nsw__nsw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], -83886079 ; CHECK-NEXT: [[TMP3:%.*]] = shl nuw nsw i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP2]], i32 -335544316, i32 [[TMP3]] ; CHECK-NEXT: [[TMP5:%.*]] = mul i32 [[TMP4]], [[TMP1]] ; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP5]], [[TMP3]] ; CHECK-NEXT: ret i32 [[TMP6]] ; %1 = or i32 %x, -83886080 %2 = icmp eq i32 %1, -83886079 %3 = shl nuw nsw i32 %1, 2 %4 = select i1 %2, i32 -335544316, i32 %3 %5 = mul i32 %4, %1 %6 = mul i32 %5, %3 ret i32 %6 } define i32 @test_shl_nuw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_shl_nuw__nsw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], -83886079 ; CHECK-NEXT: [[TMP3:%.*]] = shl nuw nsw i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP2]], i32 -335544316, i32 [[TMP3]] ; CHECK-NEXT: [[TMP5:%.*]] = mul i32 [[TMP4]], [[TMP1]] ; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP5]], [[TMP3]] ; CHECK-NEXT: ret i32 [[TMP6]] ; %1 = or i32 %x, -83886080 %2 = icmp eq i32 %1, -83886079 %3 = shl nuw i32 %1, 2 %4 = select i1 %2, i32 -335544316, i32 %3 %5 = mul i32 %4, %1 %6 = mul i32 %5, %3 ret i32 %6 } define i32 @test_shl_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_shl_nsw__nsw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], -83886079 ; CHECK-NEXT: [[TMP3:%.*]] = shl nsw i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP2]], i32 -335544316, i32 [[TMP3]] ; CHECK-NEXT: [[TMP5:%.*]] = mul i32 [[TMP4]], [[TMP1]] ; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP5]], [[TMP3]] ; CHECK-NEXT: ret i32 [[TMP6]] ; %1 = or i32 %x, -83886080 %2 = icmp eq i32 %1, -83886079 %3 = shl nsw i32 %1, 2 %4 = select i1 %2, i32 -335544316, i32 %3 %5 = mul i32 %4, %1 %6 = mul i32 %5, %3 ret i32 %6 } define i32 @test_shl__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_shl__nsw_is_safe( ; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], -83886079 ; CHECK-NEXT: [[TMP3:%.*]] = shl nsw i32 [[TMP1]], 2 ; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP2]], i32 -335544316, i32 [[TMP3]] ; CHECK-NEXT: [[TMP5:%.*]] = mul i32 [[TMP4]], [[TMP1]] ; CHECK-NEXT: [[TMP6:%.*]] = mul i32 [[TMP5]], [[TMP3]] ; CHECK-NEXT: ret i32 [[TMP6]] ; %1 = or i32 %x, -83886080 %2 = icmp eq i32 %1, -83886079 %3 = shl i32 %1, 2 %4 = select i1 %2, i32 -335544316, i32 %3 %5 = mul i32 %4, %1 %6 = mul i32 %5, %3 ret i32 %6 } define i64 @test_shl_nuw_nsw__none_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nuw_nsw__none_are_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], -2 ; 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, 4294967294 %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 @test_shl_nuw__none_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nuw__none_are_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], -2 ; CHECK-NEXT: [[TMP2:%.*]] = shl nuw 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, 4294967294 %2 = shl nuw 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 @test_shl_nsw__none_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl_nsw__none_are_safe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], -2 ; CHECK-NEXT: [[TMP2:%.*]] = shl 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, 4294967294 %2 = shl 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 @test_shl__none_are_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_shl__none_are_safe( ; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[X:%.*]], 2 ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], -8 ; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64 ; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 [[Y:%.*]], [[TMP3]] ; CHECK-NEXT: ret i64 [[TMP4]] ; %1 = and i32 %x, 4294967294 %2 = shl 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 @test_lshr_exact__exact_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_lshr_exact__exact_is_safe( ; 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 exact 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 @test_lshr__exact_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_lshr__exact_is_safe( ; 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 @test_lshr_exact__exact_is_unsafe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_lshr_exact__exact_is_unsafe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], 63 ; 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, 63 %2 = lshr exact 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 @test_lshr__exact_is_unsafe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_lshr__exact_is_unsafe( ; 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, 63 %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 @test_ashr_exact__exact_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_ashr_exact__exact_is_safe( ; 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 exact 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 @test_ashr__exact_is_safe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_ashr__exact_is_safe( ; 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 @test_ashr_exact__exact_is_unsafe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_ashr_exact__exact_is_unsafe( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[X:%.*]], -2147483585 ; 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, -2147483585 %2 = ashr exact 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 @test_ashr__exact_is_unsafe(i32 %x, i64 %y) { ; CHECK-LABEL: @test_ashr__exact_is_unsafe( ; 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, -2147483585 %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 i32 @test_add_nuw_nsw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw_nsw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1073741823 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 1073741823 %cmp = icmp eq i32 %and, 3 %add = add nuw nsw i32 %and, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add_nuw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1073741823 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 1073741823 %cmp = icmp eq i32 %and, 3 %add = add nuw i32 %and, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add_nsw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_add_nsw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1073741823 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 1073741823 %cmp = icmp eq i32 %and, 3 %add = add nsw i32 %and, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_add__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 1073741823 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 1073741823 %cmp = icmp eq i32 %and, 3 %add = add i32 %and, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add_nuw_nsw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw_nsw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 2147483647 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -2147483648, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 2147483647 %add = add nuw nsw i32 %and, 1 %sel = select i1 %cmp, i32 -2147483648, i32 %add ret i32 %sel } define i32 @test_add_nuw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 2147483647 ; CHECK-NEXT: [[ADD:%.*]] = add nuw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -2147483648, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 2147483647 %add = add nuw i32 %and, 1 %sel = select i1 %cmp, i32 -2147483648, i32 %add ret i32 %sel } define i32 @test_add_nsw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add_nsw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 2147483647 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -2147483648, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 2147483647 %add = add nsw i32 %and, 1 %sel = select i1 %cmp, i32 -2147483648, i32 %add ret i32 %sel } define i32 @test_add__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 2147483647 ; CHECK-NEXT: [[ADD:%.*]] = add nuw i32 [[AND]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -2147483648, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 2147483647 %add = add i32 %and, 1 %sel = select i1 %cmp, i32 -2147483648, i32 %add ret i32 %sel } define i32 @test_add_nuw_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw_nsw__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -1 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[OR]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 0, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -1 %add = add nuw nsw i32 %or, 1 %sel = select i1 %cmp, i32 0, i32 %add ret i32 %sel } define i32 @test_add_nuw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -1 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[OR]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 0, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -1 %add = add nuw i32 %or, 1 %sel = select i1 %cmp, i32 0, i32 %add ret i32 %sel } define i32 @test_add_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add_nsw__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -1 ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[OR]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 0, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -1 %add = add nsw i32 %or, 1 %sel = select i1 %cmp, i32 0, i32 %add ret i32 %sel } define i32 @test_add__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_add__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -1 ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[OR]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 0, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -1 %add = add i32 %or, 1 %sel = select i1 %cmp, i32 0, i32 %add ret i32 %sel } define i32 @test_add_nuw_nsw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw_nsw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[X]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 3 %add = add nuw nsw i32 %x, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add_nuw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_add_nuw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nuw i32 [[X]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 3 %add = add nuw i32 %x, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add_nsw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_add_nsw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[X]], 1 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 4, i32 [[ADD]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 3 %add = add nsw i32 %x, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_add__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_add__none_are_safe( ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[X:%.*]], 1 ; CHECK-NEXT: ret i32 [[ADD]] ; %cmp = icmp eq i32 %x, 3 %add = add i32 %x, 1 %sel = select i1 %cmp, i32 4, i32 %add ret i32 %sel } define i32 @test_sub_nuw_nsw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw_nsw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 6 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -254, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -260, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 6 %sub = sub nuw nsw i32 -254, %and %sel = select i1 %cmp, i32 -260, i32 %sub ret i32 %sel } define i32 @test_sub_nuw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 6 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -254, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -260, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 6 %sub = sub nuw i32 -254, %and %sel = select i1 %cmp, i32 -260, i32 %sub ret i32 %sel } define i32 @test_sub_nsw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nsw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 6 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -254, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -260, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 6 %sub = sub nsw i32 -254, %and %sel = select i1 %cmp, i32 -260, i32 %sub ret i32 %sel } define i32 @test_sub__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 6 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -254, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -260, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 6 %sub = sub i32 -254, %and %sel = select i1 %cmp, i32 -260, i32 %sub ret i32 %sel } define i32 @test_sub_nuw_nsw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw_nsw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 1073741824 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -2147483648, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 1073741824, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 1073741824 %sub = sub nuw nsw i32 -2147483648, %and %sel = select i1 %cmp, i32 1073741824, i32 %sub ret i32 %sel } define i32 @test_sub_nuw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 1073741824 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw i32 -2147483648, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 1073741824, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 1073741824 %sub = sub nuw i32 -2147483648, %and %sel = select i1 %cmp, i32 1073741824, i32 %sub ret i32 %sel } define i32 @test_sub_nsw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nsw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 1073741824 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -2147483648, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 1073741824, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 1073741824 %sub = sub nsw i32 -2147483648, %and %sel = select i1 %cmp, i32 1073741824, i32 %sub ret i32 %sel } define i32 @test_sub__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 1073741824 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw i32 -2147483648, [[AND]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 1073741824, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 2147483647 %cmp = icmp eq i32 %and, 1073741824 %sub = sub i32 -2147483648, %and %sel = select i1 %cmp, i32 1073741824, i32 %sub ret i32 %sel } define i32 @test_sub_nuw_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw_nsw__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -2147483647 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -2147483648, [[OR]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -2147483647 %sub = sub nuw nsw i32 -2147483648, %or %sel = select i1 %cmp, i32 -1, i32 %sub ret i32 %sel } define i32 @test_sub_nuw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -2147483647 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -2147483648, [[OR]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -2147483647 %sub = sub nuw i32 -2147483648, %or %sel = select i1 %cmp, i32 -1, i32 %sub ret i32 %sel } define i32 @test_sub_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nsw__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -2147483647 ; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 -2147483648, [[OR]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -2147483647 %sub = sub nsw i32 -2147483648, %or %sel = select i1 %cmp, i32 -1, i32 %sub ret i32 %sel } define i32 @test_sub__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_sub__nsw_is_safe( ; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[OR]], -2147483647 ; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 -2147483648, [[OR]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %or = or i32 %x, -2147483648 %cmp = icmp eq i32 %or, -2147483647 %sub = sub i32 -2147483648, %or %sel = select i1 %cmp, i32 -1, i32 %sub ret i32 %sel } define i32 @test_sub_nuw_nsw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw_nsw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw nsw i32 -2147483648, [[X]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 2147483647, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 1 %sub = sub nuw nsw i32 -2147483648, %x %sel = select i1 %cmp, i32 2147483647, i32 %sub ret i32 %sel } define i32 @test_sub_nuw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nuw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[SUB:%.*]] = sub nuw i32 -2147483648, [[X]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 2147483647, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 1 %sub = sub nuw i32 -2147483648, %x %sel = select i1 %cmp, i32 2147483647, i32 %sub ret i32 %sel } define i32 @test_sub_nsw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub_nsw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 -2147483648, [[X]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 2147483647, i32 [[SUB]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 1 %sub = sub nsw i32 -2147483648, %x %sel = select i1 %cmp, i32 2147483647, i32 %sub ret i32 %sel } define i32 @test_sub__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_sub__none_are_safe( ; CHECK-NEXT: [[SUB:%.*]] = sub i32 -2147483648, [[X:%.*]] ; CHECK-NEXT: ret i32 [[SUB]] ; %cmp = icmp eq i32 %x, 1 %sub = sub i32 -2147483648, %x %sel = select i1 %cmp, i32 2147483647, i32 %sub ret i32 %sel } define i32 @test_mul_nuw_nsw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw_nsw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 17 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 153, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 17 %mul = mul nuw nsw i32 %and, 9 %sel = select i1 %cmp, i32 153, i32 %mul ret i32 %sel } define i32 @test_mul_nuw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 17 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 153, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 17 %mul = mul nuw i32 %and, 9 %sel = select i1 %cmp, i32 153, i32 %mul ret i32 %sel } define i32 @test_mul_nsw__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nsw__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 17 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 153, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 17 %mul = mul nsw i32 %and, 9 %sel = select i1 %cmp, i32 153, i32 %mul ret i32 %sel } define i32 @test_mul__all_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul__all_are_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 255 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 17 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 153, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 255 %cmp = icmp eq i32 %and, 17 %mul = mul i32 %and, 9 %sel = select i1 %cmp, i32 153, i32 %mul ret i32 %sel } define i32 @test_mul_nuw_nsw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw_nsw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 268435457 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 268435456 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1879048192, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 268435457 %cmp = icmp eq i32 %and, 268435456 %mul = mul nuw nsw i32 %and, 9 %sel = select i1 %cmp, i32 -1879048192, i32 %mul ret i32 %sel } define i32 @test_mul_nuw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 268435457 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 268435456 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1879048192, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 268435457 %cmp = icmp eq i32 %and, 268435456 %mul = mul nuw i32 %and, 9 %sel = select i1 %cmp, i32 -1879048192, i32 %mul ret i32 %sel } define i32 @test_mul_nsw__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nsw__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 268435457 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 268435456 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1879048192, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 268435457 %cmp = icmp eq i32 %and, 268435456 %mul = mul nsw i32 %and, 9 %sel = select i1 %cmp, i32 -1879048192, i32 %mul ret i32 %sel } define i32 @test_mul__nuw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul__nuw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 268435457 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 268435456 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1879048192, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = and i32 %x, 268435457 %cmp = icmp eq i32 %and, 268435456 %mul = mul i32 %and, 9 %sel = select i1 %cmp, i32 -1879048192, i32 %mul ret i32 %sel } define i32 @test_mul_nuw_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw_nsw__nsw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], -83886079 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -754974711, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = or i32 %x, -83886080 %cmp = icmp eq i32 %and, -83886079 %mul = mul nuw nsw i32 %and, 9 %sel = select i1 %cmp, i32 -754974711, i32 %mul ret i32 %sel } define i32 @test_mul_nuw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw__nsw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], -83886079 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -754974711, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = or i32 %x, -83886080 %cmp = icmp eq i32 %and, -83886079 %mul = mul nuw i32 %and, 9 %sel = select i1 %cmp, i32 -754974711, i32 %mul ret i32 %sel } define i32 @test_mul_nsw__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nsw__nsw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], -83886079 ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -754974711, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = or i32 %x, -83886080 %cmp = icmp eq i32 %and, -83886079 %mul = mul nsw i32 %and, 9 %sel = select i1 %cmp, i32 -754974711, i32 %mul ret i32 %sel } define i32 @test_mul__nsw_is_safe(i32 %x) { ; CHECK-LABEL: @test_mul__nsw_is_safe( ; CHECK-NEXT: [[AND:%.*]] = or i32 [[X:%.*]], -83886080 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], -83886079 ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[AND]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -754974711, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %and = or i32 %x, -83886080 %cmp = icmp eq i32 %and, -83886079 %mul = mul i32 %and, 9 %sel = select i1 %cmp, i32 -754974711, i32 %mul ret i32 %sel } define i32 @test_mul_nuw_nsw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw_nsw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 805306368 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[X]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1342177280, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 805306368 %mul = mul nuw nsw i32 %x, 9 %sel = select i1 %cmp, i32 -1342177280, i32 %mul ret i32 %sel } define i32 @test_mul_nuw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nuw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 805306368 ; CHECK-NEXT: [[MUL:%.*]] = mul nuw i32 [[X]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1342177280, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 805306368 %mul = mul nuw i32 %x, 9 %sel = select i1 %cmp, i32 -1342177280, i32 %mul ret i32 %sel } define i32 @test_mul_nsw__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul_nsw__none_are_safe( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 805306368 ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[X]], 9 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1342177280, i32 [[MUL]] ; CHECK-NEXT: ret i32 [[SEL]] ; %cmp = icmp eq i32 %x, 805306368 %mul = mul nsw i32 %x, 9 %sel = select i1 %cmp, i32 -1342177280, i32 %mul ret i32 %sel } define i32 @test_mul__none_are_safe(i32 %x) { ; CHECK-LABEL: @test_mul__none_are_safe( ; CHECK-NEXT: [[MUL:%.*]] = mul i32 [[X:%.*]], 9 ; CHECK-NEXT: ret i32 [[MUL]] ; %cmp = icmp eq i32 %x, 805306368 %mul = mul i32 %x, 9 %sel = select i1 %cmp, i32 -1342177280, i32 %mul ret i32 %sel }