| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| define i1 @test_nuw_and_unsigned_pred(i64 %x) { |
| ; CHECK-LABEL: @test_nuw_and_unsigned_pred( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp ugt i64 [[X:%.*]], 7 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nuw i64 10, %x |
| %z = icmp ult i64 %y, 3 |
| ret i1 %z |
| } |
| |
| define i1 @test_nsw_and_signed_pred(i64 %x) { |
| ; CHECK-LABEL: @test_nsw_and_signed_pred( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp slt i64 [[X:%.*]], -7 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nsw i64 3, %x |
| %z = icmp sgt i64 %y, 10 |
| ret i1 %z |
| } |
| |
| define i1 @test_nuw_nsw_and_unsigned_pred(i64 %x) { |
| ; CHECK-LABEL: @test_nuw_nsw_and_unsigned_pred( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp ugt i64 [[X:%.*]], 6 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nuw nsw i64 10, %x |
| %z = icmp ule i64 %y, 3 |
| ret i1 %z |
| } |
| |
| define i1 @test_nuw_nsw_and_signed_pred(i64 %x) { |
| ; CHECK-LABEL: @test_nuw_nsw_and_signed_pred( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp sgt i64 [[X:%.*]], 7 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nuw nsw i64 10, %x |
| %z = icmp slt i64 %y, 3 |
| ret i1 %z |
| } |
| |
| define i1 @test_negative_nuw_and_signed_pred(i64 %x) { |
| ; CHECK-LABEL: @test_negative_nuw_and_signed_pred( |
| ; CHECK-NEXT: [[Y:%.*]] = sub nuw i64 10, [[X:%.*]] |
| ; CHECK-NEXT: [[Z:%.*]] = icmp slt i64 [[Y]], 3 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nuw i64 10, %x |
| %z = icmp slt i64 %y, 3 |
| ret i1 %z |
| } |
| |
| define i1 @test_negative_nsw_and_unsigned_pred(i64 %x) { |
| ; CHECK-LABEL: @test_negative_nsw_and_unsigned_pred( |
| ; CHECK-NEXT: [[Y:%.*]] = sub nsw i64 10, [[X:%.*]] |
| ; CHECK-NEXT: [[Z:%.*]] = icmp ult i64 [[Y]], 3 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nsw i64 10, %x |
| %z = icmp ult i64 %y, 3 |
| ret i1 %z |
| } |
| |
| define i1 @test_negative_combined_sub_unsigned_overflow(i64 %x) { |
| ; CHECK-LABEL: @test_negative_combined_sub_unsigned_overflow( |
| ; CHECK-NEXT: [[Y:%.*]] = sub nuw i64 10, [[X:%.*]] |
| ; CHECK-NEXT: [[Z:%.*]] = icmp ult i64 [[Y]], 11 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nuw i64 10, %x |
| %z = icmp ult i64 %y, 11 |
| ret i1 %z |
| } |
| |
| define i1 @test_negative_combined_sub_signed_overflow(i8 %x) { |
| ; CHECK-LABEL: @test_negative_combined_sub_signed_overflow( |
| ; CHECK-NEXT: [[Y:%.*]] = sub nsw i8 127, [[X:%.*]] |
| ; CHECK-NEXT: [[Z:%.*]] = icmp slt i8 [[Y]], -1 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %y = sub nsw i8 127, %x |
| %z = icmp slt i8 %y, -1 |
| ret i1 %z |
| } |