| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instsimplify -S | FileCheck %s |
| |
| define <4 x i32> @const_folding(<4 x i32> %x) { |
| ; CHECK-LABEL: @const_folding( |
| ; CHECK-NEXT: ret <4 x i32> zeroinitializer |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> zeroinitializer, <4 x i32> <i32 5, i32 4, i32 5, i32 4> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @const_folding1(<4 x i32> %x) { |
| ; CHECK-LABEL: @const_folding1( |
| ; CHECK-NEXT: ret <4 x i32> <i32 5, i32 5, i32 5, i32 5> |
| ; |
| %shuf = shufflevector <4 x i32> <i32 5, i32 4, i32 5, i32 4>, <4 x i32> %x, <4 x i32> zeroinitializer |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @const_folding_negative(<3 x i32> %x) { |
| ; CHECK-LABEL: @const_folding_negative( |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <3 x i32> [[X:%.*]], <3 x i32> zeroinitializer, <4 x i32> <i32 2, i32 4, i32 5, i32 4> |
| ; CHECK-NEXT: ret <4 x i32> [[SHUF]] |
| ; |
| %shuf = shufflevector <3 x i32> %x, <3 x i32> zeroinitializer, <4 x i32> <i32 2, i32 4, i32 5, i32 4> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand(<4 x i32> %x) { |
| ; CHECK-LABEL: @splat_operand( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: ret <4 x i32> [[SPLAT]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> poison, <4 x i32> <i32 0, i32 3, i32 2, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand_poison(<4 x i32> %x) { |
| ; CHECK-LABEL: @splat_operand_poison( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: ret <4 x i32> [[SPLAT]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> poison, <4 x i32> <i32 0, i32 3, i32 2, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand1(<4 x i32> %x, <4 x i32> %y) { |
| ; CHECK-LABEL: @splat_operand1( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]], <4 x i32> zeroinitializer |
| ; CHECK-NEXT: ret <4 x i32> [[SPLAT]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> %y, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> poison, <4 x i32> <i32 0, i32 3, i32 2, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand2(<4 x i32> %x, <4 x i32> %y) { |
| ; CHECK-LABEL: @splat_operand2( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: ret <4 x i32> [[SPLAT]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> %y, <4 x i32> <i32 0, i32 3, i32 2, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand3(<4 x i32> %x) { |
| ; CHECK-LABEL: @splat_operand3( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: ret <4 x i32> [[SPLAT]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> zeroinitializer, <4 x i32> %splat, <4 x i32> <i32 7, i32 6, i32 5, i32 5> |
| ret <4 x i32> %shuf |
| } |
| |
| define <8 x i32> @splat_operand_negative(<4 x i32> %x) { |
| ; CHECK-LABEL: @splat_operand_negative( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[SPLAT]], <4 x i32> poison, <8 x i32> <i32 0, i32 3, i32 2, i32 1, i32 poison, i32 poison, i32 poison, i32 poison> |
| ; CHECK-NEXT: ret <8 x i32> [[SHUF]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> poison, <8 x i32> <i32 0, i32 3, i32 2, i32 1, i32 undef, i32 undef, i32 undef, i32 undef> |
| ret <8 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand_negative2(<4 x i32> %x, <4 x i32> %y) { |
| ; CHECK-LABEL: @splat_operand_negative2( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[SPLAT]], <4 x i32> [[Y:%.*]], <4 x i32> <i32 0, i32 3, i32 4, i32 1> |
| ; CHECK-NEXT: ret <4 x i32> [[SHUF]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> %y, <4 x i32> <i32 0, i32 3, i32 4, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand_negative3(<4 x i32> %x, <4 x i32> %y) { |
| ; CHECK-LABEL: @splat_operand_negative3( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[Y:%.*]], <4 x i32> [[SPLAT]], <4 x i32> <i32 0, i32 3, i32 4, i32 1> |
| ; CHECK-NEXT: ret <4 x i32> [[SHUF]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> zeroinitializer |
| %shuf = shufflevector <4 x i32> %y, <4 x i32> %splat, <4 x i32> <i32 0, i32 3, i32 4, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @splat_operand_negative4(<4 x i32> %x) { |
| ; CHECK-LABEL: @splat_operand_negative4( |
| ; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> <i32 2, i32 poison, i32 2, i32 poison> |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[SPLAT]], <4 x i32> poison, <4 x i32> <i32 0, i32 2, i32 poison, i32 poison> |
| ; CHECK-NEXT: ret <4 x i32> [[SHUF]] |
| ; |
| %splat = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 2, i32 undef, i32 2, i32 undef> |
| %shuf = shufflevector <4 x i32> %splat, <4 x i32> poison, <4 x i32> <i32 0, i32 2, i32 undef, i32 undef> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @undef_mask(<4 x i32> %x) { |
| ; CHECK-LABEL: @undef_mask( |
| ; CHECK-NEXT: ret <4 x i32> poison |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> poison |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @undef_mask_1(<4 x i32> %x, <4 x i32> %y) { |
| ; CHECK-LABEL: @undef_mask_1( |
| ; CHECK-NEXT: ret <4 x i32> poison |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> %y, <4 x i32> poison |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @identity_mask_0(<4 x i32> %x) { |
| ; CHECK-LABEL: @identity_mask_0( |
| ; CHECK-NEXT: ret <4 x i32> [[X:%.*]] |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @identity_mask_1(<4 x i32> %x) { |
| ; CHECK-LABEL: @identity_mask_1( |
| ; CHECK-NEXT: ret <4 x i32> [[X:%.*]] |
| ; |
| %shuf = shufflevector <4 x i32> undef, <4 x i32> %x, <4 x i32> <i32 4, i32 5, i32 6, i32 7> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @pseudo_identity_mask(<4 x i32> %x) { |
| ; CHECK-LABEL: @pseudo_identity_mask( |
| ; CHECK-NEXT: ret <4 x i32> [[X:%.*]] |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> %x, <4 x i32> <i32 0, i32 1, i32 2, i32 7> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @not_identity_mask(<4 x i32> %x) { |
| ; CHECK-LABEL: @not_identity_mask( |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> [[X]], <4 x i32> <i32 0, i32 1, i32 2, i32 6> |
| ; CHECK-NEXT: ret <4 x i32> [[SHUF]] |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> %x, <4 x i32> <i32 0, i32 1, i32 2, i32 6> |
| ret <4 x i32> %shuf |
| } |
| |
| ; TODO: Should we simplify if the mask has an undef element? |
| |
| define <4 x i32> @possible_identity_mask(<4 x i32> %x) { |
| ; CHECK-LABEL: @possible_identity_mask( |
| ; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 poison> |
| ; CHECK-NEXT: ret <4 x i32> [[SHUF]] |
| ; |
| %shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 undef> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @const_operand(<4 x i32> %x) { |
| ; CHECK-LABEL: @const_operand( |
| ; CHECK-NEXT: ret <4 x i32> <i32 42, i32 45, i32 44, i32 43> |
| ; |
| %shuf = shufflevector <4 x i32> <i32 42, i32 43, i32 44, i32 45>, <4 x i32> %x, <4 x i32> <i32 0, i32 3, i32 2, i32 1> |
| ret <4 x i32> %shuf |
| } |
| |
| define <4 x i32> @merge(<4 x i32> %x) { |
| ; CHECK-LABEL: @merge( |
| ; CHECK-NEXT: ret <4 x i32> [[X:%.*]] |
| ; |
| %lower = shufflevector <4 x i32> %x, <4 x i32> poison, <2 x i32> <i32 1, i32 0> |
| %upper = shufflevector <4 x i32> %x, <4 x i32> poison, <2 x i32> <i32 2, i32 3> |
| %merged = shufflevector <2 x i32> %upper, <2 x i32> %lower, <4 x i32> <i32 3, i32 2, i32 0, i32 1> |
| ret <4 x i32> %merged |
| } |
| |
| ; This crosses lanes from the source op. |
| |
| define <4 x i32> @not_merge(<4 x i32> %x) { |
| ; CHECK-LABEL: @not_merge( |
| ; CHECK-NEXT: [[L:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <2 x i32> <i32 0, i32 1> |
| ; CHECK-NEXT: [[U:%.*]] = shufflevector <4 x i32> [[X]], <4 x i32> poison, <2 x i32> <i32 2, i32 3> |
| ; CHECK-NEXT: [[MERGED:%.*]] = shufflevector <2 x i32> [[U]], <2 x i32> [[L]], <4 x i32> <i32 3, i32 2, i32 0, i32 1> |
| ; CHECK-NEXT: ret <4 x i32> [[MERGED]] |
| ; |
| %l = shufflevector <4 x i32> %x, <4 x i32> poison, <2 x i32> <i32 0, i32 1> |
| %u = shufflevector <4 x i32> %x, <4 x i32> poison, <2 x i32> <i32 2, i32 3> |
| %merged = shufflevector <2 x i32> %u, <2 x i32> %l, <4 x i32> <i32 3, i32 2, i32 0, i32 1> |
| ret <4 x i32> %merged |
| } |
| |
| define <8 x double> @extract_and_concat(<8 x double> %x) { |
| ; CHECK-LABEL: @extract_and_concat( |
| ; CHECK-NEXT: ret <8 x double> [[X:%.*]] |
| ; |
| %s1 = shufflevector <8 x double> %x, <8 x double> poison, <2 x i32> <i32 0, i32 1> |
| %s2 = shufflevector <8 x double> %x, <8 x double> poison, <2 x i32> <i32 2, i32 3> |
| %s3 = shufflevector <8 x double> %x, <8 x double> poison, <2 x i32> <i32 4, i32 5> |
| %s4 = shufflevector <8 x double> %x, <8 x double> poison, <2 x i32> <i32 6, i32 7> |
| %s5 = shufflevector <2 x double> %s1, <2 x double> %s2, <4 x i32> <i32 0, i32 1, i32 2, i32 3> |
| %s6 = shufflevector <2 x double> %s3, <2 x double> %s4, <4 x i32> <i32 0, i32 1, i32 2, i32 3> |
| %s7 = shufflevector <4 x double> %s5, <4 x double> %s6, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> |
| ret <8 x double> %s7 |
| } |
| |
| ; This case has intermediate lane crossings. |
| |
| define <8 x i64> @PR30630(<8 x i64> %x) { |
| ; CHECK-LABEL: @PR30630( |
| ; CHECK-NEXT: ret <8 x i64> [[X:%.*]] |
| ; |
| %s1 = shufflevector <8 x i64> %x, <8 x i64> poison, <2 x i32> <i32 0, i32 4> |
| %s2 = shufflevector <8 x i64> %x, <8 x i64> poison, <2 x i32> <i32 1, i32 5> |
| %s3 = shufflevector <8 x i64> %x, <8 x i64> poison, <2 x i32> <i32 2, i32 6> |
| %s4 = shufflevector <8 x i64> %x, <8 x i64> poison, <2 x i32> <i32 3, i32 7> |
| %s5 = shufflevector <2 x i64> %s1, <2 x i64> %s2, <4 x i32> <i32 0, i32 1, i32 2, i32 3> |
| %s6 = shufflevector <2 x i64> %s3, <2 x i64> %s4, <4 x i32> <i32 0, i32 1, i32 2, i32 3> |
| %s7 = shufflevector <4 x i64> %s5, <4 x i64> %s6, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 1, i32 3, i32 5, i32 7> |
| ret <8 x i64> %s7 |
| } |
| |
| ; This case covers internal canonicalization of shuffles with one constant input vector. |
| |
| ;FIXME: Another issue exposed here, this whole function could be simplified to: |
| ; ret <2 x float> zeroinitializer |
| define <2 x float> @PR32872(<2 x float> %x) { |
| ; CHECK-LABEL: @PR32872( |
| ; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <2 x float> [[X:%.*]], <2 x float> zeroinitializer, <4 x i32> <i32 2, i32 2, i32 0, i32 1> |
| ; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x float> zeroinitializer, <4 x float> [[TMP1]], <2 x i32> <i32 4, i32 5> |
| ; CHECK-NEXT: ret <2 x float> [[TMP4]] |
| ; |
| %tmp1 = shufflevector <2 x float> %x, <2 x float> zeroinitializer, <4 x i32> <i32 2, i32 2, i32 0, i32 1> |
| %tmp4 = shufflevector <4 x float> zeroinitializer, <4 x float> %tmp1, <2 x i32> <i32 4, i32 5> |
| ret <2 x float> %tmp4 |
| } |
| |
| define <5 x i8> @splat_inserted_constant(<4 x i8> %x) { |
| ; CHECK-LABEL: @splat_inserted_constant( |
| ; CHECK-NEXT: ret <5 x i8> <i8 42, i8 42, i8 42, i8 42, i8 42> |
| ; |
| %ins3 = insertelement <4 x i8> %x, i8 42, i64 3 |
| %splat5 = shufflevector <4 x i8> %ins3, <4 x i8> poison, <5 x i32> <i32 3, i32 3, i32 3, i32 3, i32 3> |
| ret <5 x i8> %splat5 |
| } |
| |
| define <4 x float> @splat_inserted_constant_undef_elt(<4 x float> %x) { |
| ; CHECK-LABEL: @splat_inserted_constant_undef_elt( |
| ; CHECK-NEXT: ret <4 x float> <float 1.200000e+01, float 1.200000e+01, float poison, float 1.200000e+01> |
| ; |
| %ins1 = insertelement <4 x float> %x, float 12.0, i32 1 |
| %splat1 = shufflevector <4 x float> %ins1, <4 x float> poison, <4 x i32> <i32 1, i32 1, i32 undef, i32 1> |
| ret <4 x float> %splat1 |
| } |
| |
| define <2 x i8> @splat_inserted_constant_not_canonical(<3 x i8> %x, <3 x i8> %y) { |
| ; CHECK-LABEL: @splat_inserted_constant_not_canonical( |
| ; CHECK-NEXT: ret <2 x i8> <i8 poison, i8 23> |
| ; |
| %ins2 = insertelement <3 x i8> %x, i8 23, i7 2 |
| %splat2 = shufflevector <3 x i8> %y, <3 x i8> %ins2, <2 x i32> <i32 undef, i32 5> |
| ret <2 x i8> %splat2 |
| } |