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https://github.com/c64scene-ar/llvm-6502.git
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c417f302cb
Summary: I noticed this bug when deubging a WIP on LSR. I wonder whether and how we should add a regression test for this. Test Plan: no tests failed. Reviewers: atrick Subscribers: hfinkel, llvm-commits Differential Revision: http://reviews.llvm.org/D9536 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236887 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
829 B
LLVM
29 lines
829 B
LLVM
; RUN: opt < %s -loop-reduce -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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declare void @foo(i8)
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define void @not_addressing_mode(i8* %input, i64 %n) {
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; CHECK-LABEL: @not_addressing_mode(
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entry:
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br label %loop
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loop:
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; CHECK: loop:
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; CHECK: %lsr.iv = phi i8* [ {{%[^,]+}}, %loop ], [ %input, %entry ]
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%i = phi i64 [ 0, %entry ], [ %i.next, %loop ]
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%i.next = add i64 %i, 1
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%j = mul i64 %i, -2
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; (%input - 2 * %j) is not foldable. Worth another indvar.
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%p = getelementptr i8, i8* %input, i64 %j
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%v = load i8, i8* %p
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; CHECK: %v = load i8, i8* %lsr.iv
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call void @foo(i8 %v)
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%exitcond = icmp slt i64 %i.next, %n
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br i1 %exitcond, label %exit, label %loop
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exit:
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ret void
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}
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