| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| define i64 @test_sext_zext(i16 %A) { |
| ; CHECK-LABEL: @test_sext_zext( |
| ; CHECK-NEXT: [[C2:%.*]] = zext i16 %A to i64 |
| ; CHECK-NEXT: ret i64 [[C2]] |
| ; |
| %c1 = zext i16 %A to i32 |
| %c2 = sext i32 %c1 to i64 |
| ret i64 %c2 |
| } |
| |
| define <2 x i64> @test2(<2 x i1> %A) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i1> %A to <2 x i64> |
| ; CHECK-NEXT: [[ZEXT:%.*]] = xor <2 x i64> [[TMP1]], <i64 1, i64 1> |
| ; CHECK-NEXT: ret <2 x i64> [[ZEXT]] |
| ; |
| %xor = xor <2 x i1> %A, <i1 true, i1 true> |
| %zext = zext <2 x i1> %xor to <2 x i64> |
| ret <2 x i64> %zext |
| } |
| |
| define <2 x i64> @test3(<2 x i64> %A) { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: [[AND:%.*]] = and <2 x i64> %A, <i64 23, i64 42> |
| ; CHECK-NEXT: ret <2 x i64> [[AND]] |
| ; |
| %trunc = trunc <2 x i64> %A to <2 x i32> |
| %and = and <2 x i32> %trunc, <i32 23, i32 42> |
| %zext = zext <2 x i32> %and to <2 x i64> |
| ret <2 x i64> %zext |
| } |
| |
| define <2 x i64> @test4(<2 x i64> %A) { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i64> %A, <i64 4294967295, i64 4294967295> |
| ; CHECK-NEXT: [[XOR:%.*]] = and <2 x i64> [[TMP1]], <i64 23, i64 42> |
| ; CHECK-NEXT: ret <2 x i64> [[XOR]] |
| ; |
| %trunc = trunc <2 x i64> %A to <2 x i32> |
| %and = and <2 x i32> %trunc, <i32 23, i32 42> |
| %xor = xor <2 x i32> %and, <i32 23, i32 42> |
| %zext = zext <2 x i32> %xor to <2 x i64> |
| ret <2 x i64> %zext |
| } |
| |
| ; FIXME: If the xor was done in the smaller type, the back-to-back zexts would get combined. |
| |
| define i64 @fold_xor_zext_sandwich(i1 %a) { |
| ; CHECK-LABEL: @fold_xor_zext_sandwich( |
| ; CHECK-NEXT: [[ZEXT1:%.*]] = zext i1 %a to i32 |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[ZEXT1]], 1 |
| ; CHECK-NEXT: [[ZEXT2:%.*]] = zext i32 [[XOR]] to i64 |
| ; CHECK-NEXT: ret i64 [[ZEXT2]] |
| ; |
| %zext1 = zext i1 %a to i32 |
| %xor = xor i32 %zext1, 1 |
| %zext2 = zext i32 %xor to i64 |
| ret i64 %zext2 |
| } |
| |
| define <2 x i64> @fold_xor_zext_sandwich_vec(<2 x i1> %a) { |
| ; CHECK-LABEL: @fold_xor_zext_sandwich_vec( |
| ; CHECK-NEXT: [[ZEXT1:%.*]] = zext <2 x i1> %a to <2 x i64> |
| ; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i64> [[ZEXT1]], <i64 1, i64 1> |
| ; CHECK-NEXT: ret <2 x i64> [[XOR]] |
| ; |
| %zext1 = zext <2 x i1> %a to <2 x i32> |
| %xor = xor <2 x i32> %zext1, <i32 1, i32 1> |
| %zext2 = zext <2 x i32> %xor to <2 x i64> |
| ret <2 x i64> %zext2 |
| } |
| |