forked from OSchip/llvm-project
36 lines
849 B
LLVM
36 lines
849 B
LLVM
; RUN: llc -mtriple=armv8-eabi -verify-machineinstrs %s -o /dev/null
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; This test ensures that Loop Strength Reduction will
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; not create an Add Reccurence Expression if not all
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; its operands are loop invariants.
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define void @add_rec_expr() {
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entry:
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br label %loop0
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loop0:
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%c.0 = phi i32 [ 0, %entry ], [ %inc.0, %loop0 ]
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%inc.0 = add nuw i32 %c.0, 1
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br i1 undef, label %loop0, label %bb1
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bb1:
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%mul.0 = mul i32 %c.0, %c.0
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%gelptr.0 = getelementptr inbounds i16, i16* undef, i32 %mul.0
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br label %loop1
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loop1:
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%inc.1 = phi i32 [ %inc.2, %bb4 ], [ 0, %bb1 ]
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%mul.1 = mul i32 %inc.1, %c.0
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br label %bb3
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bb3:
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%add.0 = add i32 undef, %mul.1
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%gelptr.1 = getelementptr inbounds i16, i16* %gelptr.0, i32 %add.0
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store i16 undef, i16* %gelptr.1, align 2
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br label %bb4
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bb4:
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%inc.2 = add nuw i32 %inc.1, 1
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br label %loop1
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}
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