mirror of
https://github.com/c64scene-ar/llvm-6502.git
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51 lines
1.5 KiB
LLVM
51 lines
1.5 KiB
LLVM
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; RUN: opt -S -loop-reduce -mcpu=corei7-avx -mtriple=x86_64-apple-macosx < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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define void @indvar_expansion(i8* nocapture readonly %rowsptr) {
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entry:
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br label %for.cond
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; SCEVExpander used to create induction variables in the loop %for.cond while
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; expanding the recurrence start value of loop strength reduced values from
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; %vector.body.
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; CHECK-LABEL: indvar_expansion
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; CHECK: for.cond:
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; CHECK-NOT: phi i3
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; CHECK: br i1 {{.+}}, label %for.cond
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for.cond:
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%indvars.iv44 = phi i64 [ %indvars.iv.next45, %for.cond ], [ 0, %entry ]
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%cmp = icmp eq i8 undef, 0
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%indvars.iv.next45 = add nuw nsw i64 %indvars.iv44, 1
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br i1 %cmp, label %for.cond, label %for.cond2
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for.cond2:
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br i1 undef, label %for.cond2, label %for.body14.lr.ph
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for.body14.lr.ph:
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%sext = shl i64 %indvars.iv44, 32
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%0 = ashr exact i64 %sext, 32
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%1 = sub i64 undef, %indvars.iv44
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%2 = and i64 %1, 4294967295
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%3 = add i64 %2, 1
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%fold = add i64 %1, 1
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%n.mod.vf = and i64 %fold, 7
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%n.vec = sub i64 %3, %n.mod.vf
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%end.idx.rnd.down = add i64 %n.vec, %0
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br label %vector.body
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vector.body:
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%index = phi i64 [ %index.next, %vector.body ], [ %0, %for.body14.lr.ph ]
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%4 = getelementptr inbounds i8* %rowsptr, i64 %index
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%5 = bitcast i8* %4 to <4 x i8>*
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%wide.load = load <4 x i8>* %5, align 1
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%index.next = add i64 %index, 8
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%6 = icmp eq i64 %index.next, %end.idx.rnd.down
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br i1 %6, label %for.end24, label %vector.body
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for.end24:
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ret void
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}
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