mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-28 04:33:05 +00:00
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
|
|
; PR2003
|
|
|
|
define i32 @foo(i32 %n) {
|
|
entry:
|
|
br label %header
|
|
header:
|
|
%i = phi i32 [ 100, %entry ], [ %i.inc, %next ]
|
|
%cond = icmp ult i32 %i, %n
|
|
br i1 %cond, label %next, label %return
|
|
next:
|
|
%i.inc = add i32 %i, 1
|
|
br label %header
|
|
return:
|
|
ret i32 %i
|
|
}
|
|
|