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3034c10675
that gets recognized with a SCEVZeroExtendExpr must be an And with a low-bits mask. With r73540, this is no longer the case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73594 91177308-0d34-0410-b5e6-96231b3b80d8
12 lines
327 B
LLVM
12 lines
327 B
LLVM
; RUN: llvm-as < %s | opt -scalar-evolution -disable-output -analyze | grep {\\--> %z}
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; ScalarEvolution shouldn't try to analyze %s into something like
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; --> (zext i4 (-1 + (-1 * (trunc i64 (8 * %x) to i4))) to i64)
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define i64 @foo(i64 %x) {
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%a = shl i64 %x, 3
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%t = and i64 %a, 8
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%z = xor i64 %t, 8
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ret i64 %z
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}
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