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https://github.com/c64scene-ar/llvm-6502.git
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36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
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; Loop is elimianted. Save last value assignments, including induction variable.
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; RUN: llvm-as < %s | opt -loop-index-split -disable-output -stats |& \
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; RUN: grep "loop-index-split" | count 1
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declare i32 @foo(i32)
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declare i32 @bar(i32, i32)
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define void @foobar(i32 %a, i32 %b) {
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entry:
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br label %bb
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bb: ; preds = %cond_next, %entry
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%i.01.0 = phi i32 [ 0, %entry ], [ %tmp8, %cond_next ] ; <i32> [#uses=3]
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%tsum.16.0 = phi i32 [ 42, %entry ], [ %tsum.0, %cond_next ] ; <i32> [#uses=2]
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%tmp1 = icmp eq i32 %i.01.0, 50 ; <i1> [#uses=1]
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br i1 %tmp1, label %cond_true, label %cond_next
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cond_true: ; preds = %bb
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%tmp4 = tail call i32 @foo( i32 %i.01.0 ) ; <i32> [#uses=1]
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%tmp6 = add i32 %tmp4, %tsum.16.0 ; <i32> [#uses=1]
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br label %cond_next
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cond_next: ; preds = %bb, %cond_true
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%tsum.0 = phi i32 [ %tmp6, %cond_true ], [ %tsum.16.0, %bb ] ; <i32> [#uses=2]
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%tmp8 = add i32 %i.01.0, 1 ; <i32> [#uses=3]
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%tmp11 = icmp slt i32 %tmp8, 100 ; <i1> [#uses=1]
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br i1 %tmp11, label %bb, label %bb14
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bb14: ; preds = %cond_next
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%tmp8.lcssa = phi i32 [ %tmp8, %cond_next ] ; <i32> [#uses=1]
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%tsum.0.lcssa = phi i32 [ %tsum.0, %cond_next ] ; <i32> [#uses=1]
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%tmp17 = tail call i32 @bar( i32 %tmp8.lcssa, i32 %tsum.0.lcssa ) ; <i32> [#uses=0]
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ret void
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}
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