| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| ; Tests for slt/ult |
| |
| define i1 @slt_positive_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @slt_positive_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 7 |
| %b = icmp slt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @slt_negative_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @slt_negative_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, -7 |
| %b = icmp slt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @slt_positive_multip_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @slt_positive_multip_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 5 |
| %b = icmp slt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ult_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @ult_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 7 |
| %b = icmp ult i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ult_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ult_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ult i8 %a, 21 |
| ret i1 %b |
| } |
| |
| ; Tests for sgt/ugt |
| |
| define i1 @sgt_positive_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @sgt_positive_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 7 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_negative_multip_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @sgt_negative_multip_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, -7 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_positive_multip_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @sgt_positive_multip_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 5 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ugt_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @ugt_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 7 |
| %b = icmp ugt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ugt_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ugt_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ugt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| ; Tests for eq/ne |
| |
| define i1 @eq_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @eq_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 20 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp eq i8 %a, 20 |
| ret i1 %b |
| } |
| |
| define i1 @ne_rem_zero(i8 %x) { |
| ; CHECK-LABEL: @ne_rem_zero( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 30 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ne i8 %a, 30 |
| ret i1 %b |
| } |
| |
| define i1 @eq_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @eq_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 31 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp eq i8 %a, 31 |
| ret i1 %b |
| } |
| |
| define i1 @ne_rem_nz(i8 %x) { |
| ; CHECK-LABEL: @ne_rem_nz( |
| ; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 31 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nuw i8 %x, 5 |
| %b = icmp ne i8 %a, 31 |
| ret i1 %b |
| } |
| |
| ; Negative tests for the icmp mul folds |
| |
| define i1 @sgt_positive_multip_rem_zero_nonsw(i8 %x) { |
| ; CHECK-LABEL: @sgt_positive_multip_rem_zero_nonsw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 7 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ult_multip_rem_zero_nonsw(i8 %x) { |
| ; CHECK-LABEL: @ult_multip_rem_zero_nonsw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 7 |
| %b = icmp ult i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @ugt_rem_zero_nonuw(i8 %x) { |
| ; CHECK-LABEL: @ugt_rem_zero_nonuw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 7 |
| %b = icmp ugt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_minnum(i8 %x) { |
| ; CHECK-LABEL: @sgt_minnum( |
| ; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], -128 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul nsw i8 %x, 7 |
| %b = icmp sgt i8 %a, -128 |
| ret i1 %b |
| } |
| |
| define i1 @ule_bignum(i8 %x) { |
| ; CHECK-LABEL: @ule_bignum( |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[X:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 2147483647 |
| %b = icmp ule i8 %a, 0 |
| ret i1 %b |
| } |
| |
| define i1 @sgt_mulzero(i8 %x) { |
| ; CHECK-LABEL: @sgt_mulzero( |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %a = mul nsw i8 %x, 0 |
| %b = icmp sgt i8 %a, 21 |
| ret i1 %b |
| } |
| |
| define i1 @eq_rem_zero_nonuw(i8 %x) { |
| ; CHECK-LABEL: @eq_rem_zero_nonuw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 20 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 5 |
| %b = icmp eq i8 %a, 20 |
| ret i1 %b |
| } |
| |
| define i1 @ne_rem_zero_nonuw(i8 %x) { |
| ; CHECK-LABEL: @ne_rem_zero_nonuw( |
| ; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5 |
| ; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 30 |
| ; CHECK-NEXT: ret i1 [[B]] |
| ; |
| %a = mul i8 %x, 5 |
| %b = icmp ne i8 %a, 30 |
| ret i1 %b |
| } |