1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -bdce < %s | FileCheck %s 3 4; BDCE applied to integer vectors. 5 6define <2 x i32> @test_basic(<2 x i32> %a, <2 x i32> %b) { 7; CHECK-LABEL: @test_basic( 8; CHECK-NEXT: [[A3:%.*]] = and <2 x i32> zeroinitializer, <i32 4, i32 4> 9; CHECK-NEXT: [[B2:%.*]] = add <2 x i32> [[B:%.*]], <i32 1, i32 1> 10; CHECK-NEXT: [[B3:%.*]] = and <2 x i32> [[B2]], <i32 8, i32 8> 11; CHECK-NEXT: [[C:%.*]] = or <2 x i32> [[A3]], [[B3]] 12; CHECK-NEXT: [[D:%.*]] = ashr <2 x i32> [[C]], <i32 3, i32 3> 13; CHECK-NEXT: ret <2 x i32> [[D]] 14; 15 %a2 = add <2 x i32> %a, <i32 1, i32 1> 16 %a3 = and <2 x i32> %a2, <i32 4, i32 4> 17 %b2 = add <2 x i32> %b, <i32 1, i32 1> 18 %b3 = and <2 x i32> %b2, <i32 8, i32 8> 19 %c = or <2 x i32> %a3, %b3 20 %d = ashr <2 x i32> %c, <i32 3, i32 3> 21 ret <2 x i32> %d 22} 23 24; Going vector -> scalar 25define i32 @test_extractelement(<2 x i32> %a, <2 x i32> %b) { 26; CHECK-LABEL: @test_extractelement( 27; CHECK-NEXT: [[A3:%.*]] = and <2 x i32> zeroinitializer, <i32 4, i32 4> 28; CHECK-NEXT: [[B2:%.*]] = add <2 x i32> [[B:%.*]], <i32 1, i32 1> 29; CHECK-NEXT: [[B3:%.*]] = and <2 x i32> [[B2]], <i32 8, i32 8> 30; CHECK-NEXT: [[C:%.*]] = or <2 x i32> [[A3]], [[B3]] 31; CHECK-NEXT: [[D:%.*]] = extractelement <2 x i32> [[C]], i32 0 32; CHECK-NEXT: [[E:%.*]] = ashr i32 [[D]], 3 33; CHECK-NEXT: ret i32 [[E]] 34; 35 %a2 = add <2 x i32> %a, <i32 1, i32 1> 36 %a3 = and <2 x i32> %a2, <i32 4, i32 4> 37 %b2 = add <2 x i32> %b, <i32 1, i32 1> 38 %b3 = and <2 x i32> %b2, <i32 8, i32 8> 39 %c = or <2 x i32> %a3, %b3 40 %d = extractelement <2 x i32> %c, i32 0 41 %e = ashr i32 %d, 3 42 ret i32 %e 43} 44 45; Going scalar -> vector 46define <2 x i32> @test_insertelement(i32 %a, i32 %b) { 47; CHECK-LABEL: @test_insertelement( 48; CHECK-NEXT: [[X3:%.*]] = and <2 x i32> zeroinitializer, <i32 4, i32 4> 49; CHECK-NEXT: [[Y:%.*]] = insertelement <2 x i32> undef, i32 [[B:%.*]], i32 0 50; CHECK-NEXT: [[Y2:%.*]] = insertelement <2 x i32> [[Y]], i32 [[A:%.*]], i32 1 51; CHECK-NEXT: [[Y3:%.*]] = and <2 x i32> [[Y2]], <i32 8, i32 8> 52; CHECK-NEXT: [[Z:%.*]] = or <2 x i32> [[X3]], [[Y3]] 53; CHECK-NEXT: [[U:%.*]] = ashr <2 x i32> [[Z]], <i32 3, i32 3> 54; CHECK-NEXT: ret <2 x i32> [[U]] 55; 56 %x = insertelement <2 x i32> undef, i32 %a, i32 0 57 %x2 = insertelement <2 x i32> %x, i32 %b, i32 1 58 %x3 = and <2 x i32> %x2, <i32 4, i32 4> 59 %y = insertelement <2 x i32> undef, i32 %b, i32 0 60 %y2 = insertelement <2 x i32> %y, i32 %a, i32 1 61 %y3 = and <2 x i32> %y2, <i32 8, i32 8> 62 %z = or <2 x i32> %x3, %y3 63 %u = ashr <2 x i32> %z, <i32 3, i32 3> 64 ret <2 x i32> %u 65} 66 67; Some non-int vectors and conversions 68define <2 x i32> @test_conversion(<2 x i32> %a) { 69; CHECK-LABEL: @test_conversion( 70; CHECK-NEXT: [[A2:%.*]] = add <2 x i32> [[A:%.*]], <i32 1, i32 1> 71; CHECK-NEXT: [[A3:%.*]] = and <2 x i32> [[A2]], <i32 2, i32 2> 72; CHECK-NEXT: [[X:%.*]] = uitofp <2 x i32> [[A3]] to <2 x double> 73; CHECK-NEXT: [[Y:%.*]] = fadd <2 x double> [[X]], <double 1.000000e+00, double 1.000000e+00> 74; CHECK-NEXT: [[Z:%.*]] = fptoui <2 x double> [[Y]] to <2 x i32> 75; CHECK-NEXT: [[U:%.*]] = ashr <2 x i32> [[Z]], <i32 3, i32 3> 76; CHECK-NEXT: ret <2 x i32> [[U]] 77; 78 %a2 = add <2 x i32> %a, <i32 1, i32 1> 79 %a3 = and <2 x i32> %a2, <i32 2, i32 2> 80 %x = uitofp <2 x i32> %a3 to <2 x double> 81 %y = fadd <2 x double> %x, <double 1.0, double 1.0> 82 %z = fptoui <2 x double> %y to <2 x i32> 83 %u = ashr <2 x i32> %z, <i32 3, i32 3> 84 ret <2 x i32> %u 85} 86 87; Assumption invalidation (adapted from invalidate-assumptions.ll) 88define <2 x i1> @test_assumption_invalidation(<2 x i1> %b, <2 x i8> %x) { 89; CHECK-LABEL: @test_assumption_invalidation( 90; CHECK-NEXT: [[LITTLE_NUMBER:%.*]] = zext <2 x i1> [[B:%.*]] to <2 x i8> 91; CHECK-NEXT: [[BIG_NUMBER:%.*]] = shl <2 x i8> zeroinitializer, <i8 1, i8 1> 92; CHECK-NEXT: [[SUB:%.*]] = sub <2 x i8> [[BIG_NUMBER]], [[LITTLE_NUMBER]] 93; CHECK-NEXT: [[TRUNC:%.*]] = trunc <2 x i8> [[SUB]] to <2 x i1> 94; CHECK-NEXT: ret <2 x i1> [[TRUNC]] 95; 96 %setbit = or <2 x i8> %x, <i8 64, i8 64> 97 %little_number = zext <2 x i1> %b to <2 x i8> 98 %big_number = shl <2 x i8> %setbit, <i8 1, i8 1> 99 %sub = sub nuw <2 x i8> %big_number, %little_number 100 %trunc = trunc <2 x i8> %sub to <2 x i1> 101 ret <2 x i1> %trunc 102} 103