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https://github.com/c64scene-ar/llvm-6502.git
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3e63076980
Parse reversed smax and umax as smin and umin and express them with negative or binary-not SCEVs (which are really just subtract under the hood). Parse 'xor %x, -1' as (-1 - %x). Remove dead code (ConstantInt::get always returns a ConstantInt). Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets passed into a uint64_t. Instead, create the -1 directly from ConstantInt::getAllOnesValue(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47360 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
373 B
LLVM
18 lines
373 B
LLVM
; RUN: llvm-as < %s | opt -analyze -scalar-evolution | grep umax
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; PR2003
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define i32 @foo(i32 %n) {
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entry:
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br label %header
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header:
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%i = phi i32 [ 100, %entry ], [ %i.inc, %next ]
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%cond = icmp ult i32 %i, %n
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br i1 %cond, label %next, label %return
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next:
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%i.inc = add i32 %i, 1
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br label %header
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return:
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ret i32 %i
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}
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