| ; 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 |
| } |
| |
| define i1 @test_sub_0_Y_eq_0(i8 %y) { |
| ; CHECK-LABEL: @test_sub_0_Y_eq_0( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp eq i8 [[Y:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %s = sub i8 0, %y |
| %z = icmp eq i8 %s, 0 |
| ret i1 %z |
| } |
| |
| define i1 @test_sub_0_Y_ne_0(i8 %y) { |
| ; CHECK-LABEL: @test_sub_0_Y_ne_0( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp ne i8 [[Y:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %s = sub i8 0, %y |
| %z = icmp ne i8 %s, 0 |
| ret i1 %z |
| } |
| |
| define i1 @test_sub_4_Y_ne_4(i8 %y) { |
| ; CHECK-LABEL: @test_sub_4_Y_ne_4( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp ne i8 [[Y:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %s = sub i8 4, %y |
| %z = icmp ne i8 %s, 4 |
| ret i1 %z |
| } |
| |
| define i1 @test_sub_127_Y_eq_127(i8 %y) { |
| ; CHECK-LABEL: @test_sub_127_Y_eq_127( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp eq i8 [[Y:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %s = sub i8 127, %y |
| %z = icmp eq i8 %s, 127 |
| ret i1 %z |
| } |
| |
| define i1 @test_sub_255_Y_eq_255(i8 %y) { |
| ; CHECK-LABEL: @test_sub_255_Y_eq_255( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp eq i8 [[Y:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[Z]] |
| ; |
| %s = sub i8 255, %y |
| %z = icmp eq i8 %s, 255 |
| ret i1 %z |
| } |
| define <2 x i1> @test_sub_255_Y_eq_255_vec(<2 x i8> %y) { |
| ; CHECK-LABEL: @test_sub_255_Y_eq_255_vec( |
| ; CHECK-NEXT: [[Z:%.*]] = icmp eq <2 x i8> [[Y:%.*]], zeroinitializer |
| ; CHECK-NEXT: ret <2 x i1> [[Z]] |
| ; |
| %s = sub <2 x i8> <i8 255, i8 255>, %y |
| %z = icmp eq <2 x i8> %s, <i8 255, i8 255> |
| ret <2 x i1> %z |
| } |