derek.holloway
7502bf64a4
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103 lines
4.2 KiB
LLVM
103 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=bdce < %s | FileCheck %s
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; BDCE applied to integer vectors.
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define <2 x i32> @test_basic(<2 x i32> %a, <2 x i32> %b) {
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; CHECK-LABEL: @test_basic(
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; CHECK-NEXT: [[A3:%.*]] = and <2 x i32> zeroinitializer, splat (i32 4)
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; CHECK-NEXT: [[B2:%.*]] = add <2 x i32> [[B:%.*]], splat (i32 1)
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; CHECK-NEXT: [[B3:%.*]] = and <2 x i32> [[B2]], splat (i32 8)
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; CHECK-NEXT: [[C:%.*]] = or <2 x i32> [[A3]], [[B3]]
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; CHECK-NEXT: [[D:%.*]] = ashr <2 x i32> [[C]], splat (i32 3)
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; CHECK-NEXT: ret <2 x i32> [[D]]
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;
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%a2 = add <2 x i32> %a, <i32 1, i32 1>
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%a3 = and <2 x i32> %a2, <i32 4, i32 4>
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%b2 = add <2 x i32> %b, <i32 1, i32 1>
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%b3 = and <2 x i32> %b2, <i32 8, i32 8>
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%c = or <2 x i32> %a3, %b3
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%d = ashr <2 x i32> %c, <i32 3, i32 3>
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ret <2 x i32> %d
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}
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; Going vector -> scalar
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define i32 @test_extractelement(<2 x i32> %a, <2 x i32> %b) {
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; CHECK-LABEL: @test_extractelement(
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; CHECK-NEXT: [[A3:%.*]] = and <2 x i32> zeroinitializer, splat (i32 4)
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; CHECK-NEXT: [[B2:%.*]] = add <2 x i32> [[B:%.*]], splat (i32 1)
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; CHECK-NEXT: [[B3:%.*]] = and <2 x i32> [[B2]], splat (i32 8)
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; CHECK-NEXT: [[C:%.*]] = or <2 x i32> [[A3]], [[B3]]
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; CHECK-NEXT: [[D:%.*]] = extractelement <2 x i32> [[C]], i32 0
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; CHECK-NEXT: [[E:%.*]] = ashr i32 [[D]], 3
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; CHECK-NEXT: ret i32 [[E]]
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;
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%a2 = add <2 x i32> %a, <i32 1, i32 1>
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%a3 = and <2 x i32> %a2, <i32 4, i32 4>
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%b2 = add <2 x i32> %b, <i32 1, i32 1>
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%b3 = and <2 x i32> %b2, <i32 8, i32 8>
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%c = or <2 x i32> %a3, %b3
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%d = extractelement <2 x i32> %c, i32 0
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%e = ashr i32 %d, 3
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ret i32 %e
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}
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; Going scalar -> vector
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define <2 x i32> @test_insertelement(i32 %a, i32 %b) {
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; CHECK-LABEL: @test_insertelement(
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; CHECK-NEXT: [[X3:%.*]] = and <2 x i32> zeroinitializer, splat (i32 4)
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; CHECK-NEXT: [[Y:%.*]] = insertelement <2 x i32> undef, i32 [[B:%.*]], i32 0
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; CHECK-NEXT: [[Y2:%.*]] = insertelement <2 x i32> [[Y]], i32 [[A:%.*]], i32 1
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; CHECK-NEXT: [[Y3:%.*]] = and <2 x i32> [[Y2]], splat (i32 8)
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; CHECK-NEXT: [[Z:%.*]] = or <2 x i32> [[X3]], [[Y3]]
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; CHECK-NEXT: [[U:%.*]] = ashr <2 x i32> [[Z]], splat (i32 3)
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; CHECK-NEXT: ret <2 x i32> [[U]]
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;
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%x = insertelement <2 x i32> undef, i32 %a, i32 0
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%x2 = insertelement <2 x i32> %x, i32 %b, i32 1
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%x3 = and <2 x i32> %x2, <i32 4, i32 4>
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%y = insertelement <2 x i32> undef, i32 %b, i32 0
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%y2 = insertelement <2 x i32> %y, i32 %a, i32 1
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%y3 = and <2 x i32> %y2, <i32 8, i32 8>
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%z = or <2 x i32> %x3, %y3
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%u = ashr <2 x i32> %z, <i32 3, i32 3>
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ret <2 x i32> %u
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}
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; Some non-int vectors and conversions
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define <2 x i32> @test_conversion(<2 x i32> %a) {
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; CHECK-LABEL: @test_conversion(
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; CHECK-NEXT: [[A2:%.*]] = add <2 x i32> [[A:%.*]], splat (i32 1)
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; CHECK-NEXT: [[A3:%.*]] = and <2 x i32> [[A2]], splat (i32 2)
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; CHECK-NEXT: [[X:%.*]] = uitofp <2 x i32> [[A3]] to <2 x double>
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; CHECK-NEXT: [[Y:%.*]] = fadd <2 x double> [[X]], splat (double 1.000000e+00)
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; CHECK-NEXT: [[Z:%.*]] = fptoui <2 x double> [[Y]] to <2 x i32>
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; CHECK-NEXT: [[U:%.*]] = ashr <2 x i32> [[Z]], splat (i32 3)
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; CHECK-NEXT: ret <2 x i32> [[U]]
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;
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%a2 = add <2 x i32> %a, <i32 1, i32 1>
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%a3 = and <2 x i32> %a2, <i32 2, i32 2>
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%x = uitofp <2 x i32> %a3 to <2 x double>
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%y = fadd <2 x double> %x, <double 1.0, double 1.0>
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%z = fptoui <2 x double> %y to <2 x i32>
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%u = ashr <2 x i32> %z, <i32 3, i32 3>
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ret <2 x i32> %u
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}
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; Assumption invalidation (adapted from invalidate-assumptions.ll)
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define <2 x i1> @test_assumption_invalidation(<2 x i1> %b, <2 x i8> %x) {
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; CHECK-LABEL: @test_assumption_invalidation(
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; CHECK-NEXT: [[LITTLE_NUMBER:%.*]] = zext <2 x i1> [[B:%.*]] to <2 x i8>
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; CHECK-NEXT: [[BIG_NUMBER:%.*]] = shl <2 x i8> zeroinitializer, splat (i8 1)
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; CHECK-NEXT: [[SUB:%.*]] = sub <2 x i8> [[BIG_NUMBER]], [[LITTLE_NUMBER]]
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; CHECK-NEXT: [[TRUNC:%.*]] = trunc <2 x i8> [[SUB]] to <2 x i1>
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; CHECK-NEXT: ret <2 x i1> [[TRUNC]]
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;
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%setbit = or <2 x i8> %x, <i8 64, i8 64>
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%little_number = zext <2 x i1> %b to <2 x i8>
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%big_number = shl <2 x i8> %setbit, <i8 1, i8 1>
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%sub = sub nuw <2 x i8> %big_number, %little_number
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%trunc = trunc <2 x i8> %sub to <2 x i1>
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ret <2 x i1> %trunc
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}
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