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https://github.com/c64scene-ar/llvm-6502.git
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b1e1e82c54
of using llvm-as, now that opt supports this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
740 B
LLVM
23 lines
740 B
LLVM
; LFTR should eliminate the need for the computation of i*i completely. It
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; is only used to compute the exit value.
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; RUN: opt %s -indvars -dce | llvm-dis | not grep mul
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@A = external global i32 ; <i32*> [#uses=1]
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define i32 @quadratic_setlt() {
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entry:
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br label %loop
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loop: ; preds = %loop, %entry
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%i = phi i32 [ 7, %entry ], [ %i.next, %loop ] ; <i32> [#uses=5]
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%i.next = add i32 %i, 1 ; <i32> [#uses=1]
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store i32 %i, i32* @A
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%i2 = mul i32 %i, %i ; <i32> [#uses=1]
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%c = icmp slt i32 %i2, 1000 ; <i1> [#uses=1]
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br i1 %c, label %loop, label %loopexit
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loopexit: ; preds = %loop
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ret i32 %i
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}
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