1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 ; RUN: opt < %s -instcombine -S | FileCheck %s 3 4 define i64 @test_sext_zext(i16 %A) { 5 ; CHECK-LABEL: @test_sext_zext( 6 ; CHECK-NEXT: [[C2:%.*]] = zext i16 %A to i64 7 ; CHECK-NEXT: ret i64 [[C2]] 8 ; 9 %c1 = zext i16 %A to i32 10 %c2 = sext i32 %c1 to i64 11 ret i64 %c2 12 } 13 14 define <2 x i64> @test2(<2 x i1> %A) { 15 ; CHECK-LABEL: @test2( 16 ; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i1> %A to <2 x i64> 17 ; CHECK-NEXT: [[ZEXT:%.*]] = xor <2 x i64> [[TMP1]], <i64 1, i64 1> 18 ; CHECK-NEXT: ret <2 x i64> [[ZEXT]] 19 ; 20 %xor = xor <2 x i1> %A, <i1 true, i1 true> 21 %zext = zext <2 x i1> %xor to <2 x i64> 22 ret <2 x i64> %zext 23 } 24 25 define <2 x i64> @test3(<2 x i64> %A) { 26 ; CHECK-LABEL: @test3( 27 ; CHECK-NEXT: [[AND:%.*]] = and <2 x i64> %A, <i64 23, i64 42> 28 ; CHECK-NEXT: ret <2 x i64> [[AND]] 29 ; 30 %trunc = trunc <2 x i64> %A to <2 x i32> 31 %and = and <2 x i32> %trunc, <i32 23, i32 42> 32 %zext = zext <2 x i32> %and to <2 x i64> 33 ret <2 x i64> %zext 34 } 35 36 define <2 x i64> @test4(<2 x i64> %A) { 37 ; CHECK-LABEL: @test4( 38 ; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i64> %A, <i64 4294967295, i64 4294967295> 39 ; CHECK-NEXT: [[XOR:%.*]] = and <2 x i64> [[TMP1]], <i64 23, i64 42> 40 ; CHECK-NEXT: ret <2 x i64> [[XOR]] 41 ; 42 %trunc = trunc <2 x i64> %A to <2 x i32> 43 %and = and <2 x i32> %trunc, <i32 23, i32 42> 44 %xor = xor <2 x i32> %and, <i32 23, i32 42> 45 %zext = zext <2 x i32> %xor to <2 x i64> 46 ret <2 x i64> %zext 47 } 48 49 ; FIXME: If the xor was done in the smaller type, the back-to-back zexts would get combined. 50 51 define i64 @fold_xor_zext_sandwich(i1 %a) { 52 ; CHECK-LABEL: @fold_xor_zext_sandwich( 53 ; CHECK-NEXT: [[ZEXT1:%.*]] = zext i1 %a to i32 54 ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[ZEXT1]], 1 55 ; CHECK-NEXT: [[ZEXT2:%.*]] = zext i32 [[XOR]] to i64 56 ; CHECK-NEXT: ret i64 [[ZEXT2]] 57 ; 58 %zext1 = zext i1 %a to i32 59 %xor = xor i32 %zext1, 1 60 %zext2 = zext i32 %xor to i64 61 ret i64 %zext2 62 } 63 64 define <2 x i64> @fold_xor_zext_sandwich_vec(<2 x i1> %a) { 65 ; CHECK-LABEL: @fold_xor_zext_sandwich_vec( 66 ; CHECK-NEXT: [[ZEXT1:%.*]] = zext <2 x i1> %a to <2 x i64> 67 ; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i64> [[ZEXT1]], <i64 1, i64 1> 68 ; CHECK-NEXT: ret <2 x i64> [[XOR]] 69 ; 70 %zext1 = zext <2 x i1> %a to <2 x i32> 71 %xor = xor <2 x i32> %zext1, <i32 1, i32 1> 72 %zext2 = zext <2 x i32> %xor to <2 x i64> 73 ret <2 x i64> %zext2 74 } 75 76
