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20 lines
648 B
LLVM
20 lines
648 B
LLVM
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; The loop sinker was running from the bottom of the loop to the top, causing
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; it to miss opportunities to sink instructions that depended on sinking other
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; instructions from the loop. Instead they got hoisted, which is better than
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; leaving them in the loop, but increases register pressure pointlessly.
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; RUN: llvm-as < %s | opt -licm | llvm-dis | grep -C1 getelementptr | grep Out:
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%Ty = type { int, int }
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%X = external global %Ty
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int %test() {
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br label %Loop
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Loop:
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%dead = getelementptr %Ty* %X, long 0, ubyte 0
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%sunk2 = load int* %dead
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br bool false, label %Loop, label %Out
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Out:
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ret int %sunk2
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}
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