200 lines
10 KiB
LLVM
200 lines
10 KiB
LLVM
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; Check that if option prefer-no-gather/scatter can disable gather/scatter instructions.
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx2,+fast-gather %s -o - | FileCheck %s --check-prefixes=GATHER
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx2,+fast-gather,+prefer-no-gather %s -o - | FileCheck %s --check-prefixes=NO-GATHER
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx512vl,+avx512dq < %s | FileCheck %s --check-prefix=SCATTER
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx512vl,+avx512dq,+prefer-no-gather < %s | FileCheck %s --check-prefix=SCATTER-NO-GATHER
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx512vl,+avx512dq,+prefer-no-scatter < %s | FileCheck %s --check-prefix=GATHER-NO-SCATTER
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+avx512vl,+avx512dq,+prefer-no-gather,+prefer-no-scatter < %s | FileCheck %s --check-prefix=NO-SCATTER-GATHER
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@A = global [1024 x i8] zeroinitializer, align 128
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@B = global [1024 x i64] zeroinitializer, align 128
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@C = global [1024 x i64] zeroinitializer, align 128
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; This tests the function that if prefer-no-gather can disable lowerMGather
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define void @test() #0 {
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; GATHER-LABEL: test:
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; GATHER: vpgatherdq
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;
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; NO-GATHER-LABEL: test:
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; NO-GATHER-NOT: vpgatherdq
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;
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; GATHER-NO-SCATTER-LABEL: test:
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; GATHER-NO-SCATTER: vpgatherdq
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;
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; NO-SCATTER-GATHER-LABEL: test:
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; NO-SCATTER-GATHER-NOT: vpgatherdq
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iter.check:
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br i1 false, label %vec.epilog.scalar.ph, label %vector.main.loop.iter.check
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vector.main.loop.iter.check: ; preds = %iter.check
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br i1 false, label %vec.epilog.ph, label %vector.ph
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vector.ph: ; preds = %vector.main.loop.iter.check
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br label %vector.body
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vector.body: ; preds = %vector.body, %vector.ph
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%index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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%0 = add i64 %index, 0
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%1 = getelementptr inbounds [1024 x i8], ptr @A, i64 0, i64 %0
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%2 = getelementptr inbounds i8, ptr %1, i32 0
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%wide.load = load <32 x i8>, ptr %2, align 1
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%3 = sext <32 x i8> %wide.load to <32 x i64>
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%4 = getelementptr inbounds [1024 x i64], ptr @B, i64 0, <32 x i64> %3
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%wide.masked.gather = call <32 x i64> @llvm.masked.gather.v32i64.v32p0(<32 x ptr> %4, i32 8, <32 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <32 x i64> poison)
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%5 = getelementptr inbounds [1024 x i64], ptr @C, i64 0, i64 %0
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%6 = getelementptr inbounds i64, ptr %5, i32 0
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store <32 x i64> %wide.masked.gather, ptr %6, align 8
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%index.next = add nuw i64 %index, 32
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%7 = icmp eq i64 %index.next, 1024
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br i1 %7, label %middle.block, label %vector.body, !llvm.loop !0
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middle.block: ; preds = %vector.body
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%cmp.n = icmp eq i64 1024, 1024
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br i1 %cmp.n, label %for.cond.cleanup, label %vec.epilog.iter.check
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vec.epilog.iter.check: ; preds = %middle.block
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br i1 true, label %vec.epilog.scalar.ph, label %vec.epilog.ph
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vec.epilog.ph: ; preds = %vector.main.loop.iter.check, %vec.epilog.iter.check
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%vec.epilog.resume.val = phi i64 [ 1024, %vec.epilog.iter.check ], [ 0, %vector.main.loop.iter.check ]
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br label %vec.epilog.vector.body
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vec.epilog.vector.body: ; preds = %vec.epilog.vector.body, %vec.epilog.ph
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%index2 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next5, %vec.epilog.vector.body ]
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%8 = add i64 %index2, 0
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%9 = getelementptr inbounds [1024 x i8], ptr @A, i64 0, i64 %8
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%10 = getelementptr inbounds i8, ptr %9, i32 0
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%wide.load3 = load <16 x i8>, ptr %10, align 1
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%11 = sext <16 x i8> %wide.load3 to <16 x i64>
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%12 = getelementptr inbounds [1024 x i64], ptr @B, i64 0, <16 x i64> %11
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%wide.masked.gather4 = call <16 x i64> @llvm.masked.gather.v16i64.v16p0(<16 x ptr> %12, i32 8, <16 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <16 x i64> poison)
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%13 = getelementptr inbounds [1024 x i64], ptr @C, i64 0, i64 %8
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%14 = getelementptr inbounds i64, ptr %13, i32 0
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store <16 x i64> %wide.masked.gather4, ptr %14, align 8
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%index.next5 = add nuw i64 %index2, 16
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%15 = icmp eq i64 %index.next5, 1024
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br i1 %15, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !2
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vec.epilog.middle.block: ; preds = %vec.epilog.vector.body
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%cmp.n1 = icmp eq i64 1024, 1024
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br i1 %cmp.n1, label %for.cond.cleanup, label %vec.epilog.scalar.ph
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vec.epilog.scalar.ph: ; preds = %iter.check, %vec.epilog.iter.check, %vec.epilog.middle.block
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%bc.resume.val = phi i64 [ 1024, %vec.epilog.middle.block ], [ 1024, %vec.epilog.iter.check ], [ 0, %iter.check ]
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br label %for.body
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for.body: ; preds = %for.body, %vec.epilog.scalar.ph
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%iv = phi i64 [ %bc.resume.val, %vec.epilog.scalar.ph ], [ %iv.next, %for.body ]
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%inA = getelementptr inbounds [1024 x i8], ptr @A, i64 0, i64 %iv
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%valA = load i8, ptr %inA, align 1
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%valA.ext = sext i8 %valA to i64
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%inB = getelementptr inbounds [1024 x i64], ptr @B, i64 0, i64 %valA.ext
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%valB = load i64, ptr %inB, align 8
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%out = getelementptr inbounds [1024 x i64], ptr @C, i64 0, i64 %iv
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store i64 %valB, ptr %out, align 8
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%iv.next = add nuw nsw i64 %iv, 1
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%cmp = icmp ult i64 %iv.next, 1024
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br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !4
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for.cond.cleanup: ; preds = %vec.epilog.middle.block, %middle.block, %for.body
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ret void
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}
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declare <32 x i64> @llvm.masked.gather.v32i64.v32p0(<32 x ptr>, i32 immarg, <32 x i1>, <32 x i64>) #1
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declare <16 x i64> @llvm.masked.gather.v16i64.v16p0(<16 x ptr>, i32 immarg, <16 x i1>, <16 x i64>) #1
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!0 = distinct !{!0, !1}
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!1 = !{!"llvm.loop.isvectorized", i32 1}
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!2 = distinct !{!2, !1, !3}
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!3 = !{!"llvm.loop.unroll.runtime.disable"}
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!4 = distinct !{!4, !3, !1}
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; This tests the function that if prefer-no-gather can disable ScalarizeMaskedGather
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define <4 x float> @gather_v4f32_ptr_v4i32(<4 x ptr> %ptr, <4 x i32> %trigger, <4 x float> %passthru) {
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; GATHER-LABEL: gather_v4f32_ptr_v4i32:
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; GATHER: vgatherqps
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;
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; NO-GATHER-LABEL: gather_v4f32_ptr_v4i32:
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; NO-GATHER-NOT: vgatherqps
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;
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; GATHER-NO-SCATTER-LABEL: gather_v4f32_ptr_v4i32:
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; GATHER-NO-SCATTER: vgatherqps
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;
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; NO-SCATTER-GATHER-LABEL: gather_v4f32_ptr_v4i32:
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; NO-SCATTER-GATHER-NOT: vgatherqps
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%mask = icmp eq <4 x i32> %trigger, zeroinitializer
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%res = call <4 x float> @llvm.masked.gather.v4f32.v4p0(<4 x ptr> %ptr, i32 4, <4 x i1> %mask, <4 x float> %passthru)
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ret <4 x float> %res
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}
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declare <4 x float> @llvm.masked.gather.v4f32.v4p0(<4 x ptr>, i32, <4 x i1>, <4 x float>)
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%struct.a = type { [4 x i32], [4 x i8], %struct.b, i32 }
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%struct.b = type { i32, i32 }
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@c = external dso_local global %struct.a, align 4
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; This tests the function that if prefer-no-gather can disable ScalarizeMaskedGather
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define <8 x i32> @gather_v8i32_v8i32(<8 x i32> %trigger) {
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; GATHER-LABEL: gather_v8i32_v8i32:
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; GATHER: vpgatherdd
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;
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; NO-GATHER-LABEL: gather_v8i32_v8i32:
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; NO-GATHER-NOT: vpgatherdd
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;
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; NO-SCATTER-GATHER-LABEL: gather_v8i32_v8i32:
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; NO-SCATTER-GATHER-NOT: vpgatherdd
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%1 = icmp eq <8 x i32> %trigger, zeroinitializer
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%2 = call <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr> getelementptr (%struct.a, <8 x ptr> <ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c>, <8 x i64> zeroinitializer, i32 0, <8 x i64> <i64 3, i64 3, i64 3, i64 3, i64 3, i64 3, i64 3, i64 3>), i32 4, <8 x i1> %1, <8 x i32> undef)
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%3 = call <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr> getelementptr (%struct.a, <8 x ptr> <ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c>, <8 x i64> zeroinitializer, i32 3), i32 4, <8 x i1> %1, <8 x i32> undef)
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%4 = add <8 x i32> %2, %3
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%5 = call <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr> getelementptr (%struct.a, <8 x ptr> <ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c, ptr @c>, <8 x i64> zeroinitializer, i32 3), i32 4, <8 x i1> %1, <8 x i32> undef)
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%6 = add <8 x i32> %4, %5
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ret <8 x i32> %6
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}
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declare <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr>, i32, <8 x i1>, <8 x i32>)
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; scatter test cases
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define void @scatter_test1(ptr %base, <16 x i32> %ind, i16 %mask, <16 x i32>%val) {
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; SCATTER-LABEL: scatter_test1:
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; SCATTER: vpscatterdd
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;
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; SCATTER-NO-GATHER-LABEL: scatter_test1:
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; SCATTER-NO-GATHER: vpscatterdd
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;
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; GATHER-NO-SCATTER-LABEL: scatter_test1:
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; GATHER-NO-SCATTER-NOT: vpscatterdd
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;
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; NO-SCATTER-GATHER-LABEL: scatter_test1:
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; NO-SCATTER-GATHER-NOT: vpscatterdd
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%broadcast.splatinsert = insertelement <16 x ptr> undef, ptr %base, i32 0
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%broadcast.splat = shufflevector <16 x ptr> %broadcast.splatinsert, <16 x ptr> undef, <16 x i32> zeroinitializer
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%gep.random = getelementptr i32, <16 x ptr> %broadcast.splat, <16 x i32> %ind
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%imask = bitcast i16 %mask to <16 x i1>
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call void @llvm.masked.scatter.v16i32.v16p0(<16 x i32>%val, <16 x ptr> %gep.random, i32 4, <16 x i1> %imask)
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call void @llvm.masked.scatter.v16i32.v16p0(<16 x i32>%val, <16 x ptr> %gep.random, i32 4, <16 x i1> %imask)
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ret void
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}
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declare void @llvm.masked.scatter.v8i32.v8p0(<8 x i32> , <8 x ptr> , i32 , <8 x i1> )
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declare void @llvm.masked.scatter.v16i32.v16p0(<16 x i32> , <16 x ptr> , i32 , <16 x i1> )
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define <8 x i32> @scatter_test2(<8 x i32>%a1, <8 x ptr> %ptr) {
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; SCATTER-LABEL: scatter_test2:
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; SCATTER: vpscatterqd
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;
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; SCATTER-NO-GATHER-LABEL: scatter_test2:
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; SCATTER-NO-GATHER: vpscatterqd
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;
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; GATHER-NO-SCATTER-LABEL: scatter_test2:
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; GATHER-NO-SCATTER-NOT: vpscatterqd
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;
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; NO-SCATTER-GATHER-LABEL: scatter_test2:
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; NO-SCATTER-GATHER-NOT: vpscatterqd
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%a = call <8 x i32> @llvm.masked.gather.v8i32.v8p0(<8 x ptr> %ptr, i32 4, <8 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>, <8 x i32> undef)
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call void @llvm.masked.scatter.v8i32.v8p0(<8 x i32> %a1, <8 x ptr> %ptr, i32 4, <8 x i1> <i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true, i1 true>)
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ret <8 x i32>%a
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}
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