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https://github.com/c64scene-ar/llvm-6502.git
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e4ba75f43e
TargetTransformInfo rather than TargetLowering, removing one of the primary instances of the layering violation of Transforms depending directly on Target. This is a really big deal because LSR used to be a "special" pass that could only be tested fully using llc and by looking at the full output of it. It also couldn't run with any other loop passes because it had to be created by the backend. No longer is this true. LSR is now just a normal pass and we should probably lift the creation of LSR out of lib/CodeGen/Passes.cpp and into the PassManagerBuilder. =] I've not done this, or updated all of the tests to use opt and a triple, because I suspect someone more familiar with LSR would do a better job. This change should be essentially without functional impact for normal compilations, and only change behvaior of targetless compilations. The conversion required changing all of the LSR code to refer to the TTI interfaces, which fortunately are very similar to TargetLowering's interfaces. However, it also allowed us to *always* expect to have some implementation around. I've pushed that simplification through the pass, and leveraged it to simplify code somewhat. It required some test updates for one of two things: either we used to skip some checks altogether but now we get the default "no" answer for them, or we used to have no information about the target and now we do have some. I've also started the process of removing AddrMode, as the TTI interface doesn't use it any longer. In some cases this simplifies code, and in others it adds some complexity, but I think it's not a bad tradeoff even there. Subsequent patches will try to clean this up even further and use other (more appropriate) abstractions. Yet again, almost all of the formatting changes brought to you by clang-format. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171735 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
3.8 KiB
LLVM
92 lines
3.8 KiB
LLVM
; RUN: opt -loop-reduce -S < %s | FileCheck %s
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; PR9939
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; LSR should properly handle the post-inc offset when folding the
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; non-IV operand of an icmp into the IV.
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; CHECK: %3 = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
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; CHECK: %4 = lshr i64 %3, 1
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; CHECK: %5 = mul i64 %4, 2
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; CHECK: br label %for.body
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; CHECK: for.body:
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; CHECK: %lsr.iv2 = phi i64 [ %lsr.iv.next, %for.body ], [ %5, %for.body.lr.ph ]
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; CHECK: %lsr.iv.next = add i64 %lsr.iv2, -2
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; CHECK: %lsr.iv.next3 = inttoptr i64 %lsr.iv.next to i16*
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; CHECK: %cmp27 = icmp eq i16* %lsr.iv.next3, null
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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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target triple = "x86_64-unknown-linux-gnu"
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%struct.Vector2 = type { i16*, [64 x i16], i32 }
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@.str = private unnamed_addr constant [37 x i8] c"0123456789abcdefghijklmnopqrstuvwxyz\00"
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define void @_Z15IntegerToStringjjR7Vector2(i32 %i, i32 %radix, %struct.Vector2* nocapture %result) nounwind noinline {
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entry:
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%buffer = alloca [33 x i16], align 16
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%add.ptr = getelementptr inbounds [33 x i16]* %buffer, i64 0, i64 33
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br label %do.body
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do.body: ; preds = %do.body, %entry
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%0 = phi i64 [ %indvar.next44, %do.body ], [ 0, %entry ]
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%i.addr.0 = phi i32 [ %div, %do.body ], [ %i, %entry ]
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%tmp51 = sub i64 32, %0
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%incdec.ptr = getelementptr [33 x i16]* %buffer, i64 0, i64 %tmp51
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%rem = urem i32 %i.addr.0, 10
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%div = udiv i32 %i.addr.0, 10
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%idxprom = zext i32 %rem to i64
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%arrayidx = getelementptr inbounds [37 x i8]* @.str, i64 0, i64 %idxprom
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%tmp5 = load i8* %arrayidx, align 1
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%conv = sext i8 %tmp5 to i16
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store i16 %conv, i16* %incdec.ptr, align 2
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%1 = icmp ugt i32 %i.addr.0, 9
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%indvar.next44 = add i64 %0, 1
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br i1 %1, label %do.body, label %do.end
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do.end: ; preds = %do.body
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%xap.0 = inttoptr i64 %0 to i1*
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%cap.0 = ptrtoint i1* %xap.0 to i64
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%sub.ptr.lhs.cast = ptrtoint i16* %add.ptr to i64
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%sub.ptr.rhs.cast = ptrtoint i16* %incdec.ptr to i64
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%sub.ptr.sub = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
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%sub.ptr.div39 = lshr exact i64 %sub.ptr.sub, 1
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%conv11 = trunc i64 %sub.ptr.div39 to i32
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%mLength = getelementptr inbounds %struct.Vector2* %result, i64 0, i32 2
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%idx.ext21 = bitcast i64 %sub.ptr.div39 to i64
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%incdec.ptr.sum = add i64 %idx.ext21, -1
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%cp.0.sum = sub i64 %incdec.ptr.sum, %0
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%add.ptr22 = getelementptr [33 x i16]* %buffer, i64 1, i64 %cp.0.sum
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%cmp2740 = icmp eq i64 %idx.ext21, 0
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br i1 %cmp2740, label %for.end, label %for.body.lr.ph
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for.body.lr.ph: ; preds = %do.end
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%tmp16 = load i32* %mLength, align 4
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%mBegin = getelementptr inbounds %struct.Vector2* %result, i64 0, i32 0
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%tmp14 = load i16** %mBegin, align 8
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%tmp48 = zext i32 %tmp16 to i64
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br label %for.body
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for.body: ; preds = %for.body, %for.body.lr.ph
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%indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.body ]
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%tmp46 = add i64 %tmp51, %indvar
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%p.042 = getelementptr [33 x i16]* %buffer, i64 0, i64 %tmp46
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%tmp47 = sub i64 %indvar, %0
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%incdec.ptr32 = getelementptr [33 x i16]* %buffer, i64 1, i64 %tmp47
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%tmp49 = add i64 %tmp48, %indvar
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%dst.041 = getelementptr i16* %tmp14, i64 %tmp49
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%tmp29 = load i16* %p.042, align 2
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store i16 %tmp29, i16* %dst.041, align 2
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%cmp27 = icmp eq i16* %incdec.ptr32, %add.ptr22
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%indvar.next = add i64 %indvar, 1
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br i1 %cmp27, label %for.end.loopexit, label %for.body
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %do.end
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%tmp38 = load i32* %mLength, align 4
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%add = add i32 %tmp38, %conv11
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store i32 %add, i32* %mLength, align 4
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ret void
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}
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