aa158bf402
Update some tests with loop-invariant instructions, where hoisting them out of the loop changes the vectorization decision. This should preserve their original spirit when making further improvements.
38 lines
1.8 KiB
LLVM
38 lines
1.8 KiB
LLVM
; RUN: opt -S -passes=loop-vectorize -force-vector-width=4 %s | FileCheck %s
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; CHECK-LABEL: @test_fshl
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; CHECK-LABEL: vector.body:
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; CHECK-NEXT: [[IDX:%.+]] = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK-NEXT: [[IDX0:%.+]] = add i32 %index, 0
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; CHECK-NEXT: [[GEP:%.+]] = getelementptr inbounds i16, ptr %src, i32 [[IDX0]]
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; CHECK-NEXT: [[GEP0:%.+]] = getelementptr inbounds i16, ptr [[GEP]], i32 0
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; CHECK-NEXT: [[WIDE_LOAD:%.+]] = load <4 x i16>, ptr [[GEP0]], align 2
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; CHECK-NEXT: [[FSHL:%.+]] = call <4 x i16> @llvm.fshl.v4i16(<4 x i16> [[WIDE_LOAD]], <4 x i16> [[WIDE_LOAD]], <4 x i16> <i16 15, i16 15, i16 15, i16 15>)
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; CHECK-NEXT: [[GEP0:%.+]] = getelementptr inbounds i16, ptr %dst, i32 [[IDX0]]
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; CHECK-NEXT: [[GEP1:%.+]] = getelementptr inbounds i16, ptr [[GEP0]], i32 0
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; CHECK-NEXT: store <4 x i16> [[FSHL]], ptr [[GEP1]], align 2
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; CHECK-NEXT: [[IDX_NEXT:%.+]] = add nuw i32 [[IDX]], 4
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; CHECK-NEXT: [[EC:%.+]] = icmp eq i32 [[IDX_NEXT]], %n.vec
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; CHECK-NEXT: br i1 [[EC]], label %middle.block, label %vector.body
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;
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define void @test_fshl(i32 %width, ptr %dst, ptr %src) {
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entry:
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br label %for.body9.us.us
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for.cond6.for.cond.cleanup8_crit_edge.us.us: ; preds = %for.body9.us.us
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ret void
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for.body9.us.us: ; preds = %for.body9.us.us, %entry
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %for.body9.us.us ]
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%gep = getelementptr inbounds i16, ptr %src, i32 %iv
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%l = load i16, ptr %gep
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%conv4.i.us.us = tail call i16 @llvm.fshl.i16(i16 %l, i16 %l, i16 15)
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%dst.gep = getelementptr inbounds i16, ptr %dst, i32 %iv
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store i16 %conv4.i.us.us, ptr %dst.gep
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%iv.next = add nuw i32 %iv, 1
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%exitcond50 = icmp eq i32 %iv.next, %width
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br i1 %exitcond50, label %for.cond6.for.cond.cleanup8_crit_edge.us.us, label %for.body9.us.us
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}
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declare i16 @llvm.fshl.i16(i16, i16, i16)
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