From 434f0e3548ef346ddce6214eb7aba6f363bcc704 Mon Sep 17 00:00:00 2001
From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Tue, 22 Jul 2014 02:32:12 +0000
Subject: [PATCH] Revert of r213521. This change introduced a non-hermetic test
 (depending on a file not in the test/ area). Backing out now so that this
 test isn't part of the 3.5 branch.

Original commit message: "TableGen: Allow AddedComplexity values to be negative
[...]"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213596 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/TableGen/NegativeAddedComplexity.ll | 41 ------------------------
 utils/TableGen/CodeGenDAGPatterns.cpp    |  2 +-
 utils/TableGen/CodeGenDAGPatterns.h      |  8 ++---
 utils/TableGen/DAGISelEmitter.cpp        |  4 +--
 4 files changed, 7 insertions(+), 48 deletions(-)
 delete mode 100644 test/TableGen/NegativeAddedComplexity.ll

diff --git a/test/TableGen/NegativeAddedComplexity.ll b/test/TableGen/NegativeAddedComplexity.ll
deleted file mode 100644
index 54c52ab3b64..00000000000
--- a/test/TableGen/NegativeAddedComplexity.ll
+++ /dev/null
@@ -1,41 +0,0 @@
-// RUN: llvm-tblgen -I../../include -gen-dag-isel %s | FileCheck %s
-// XFAIL: vg_leak
-
-include "llvm/Target/Target.td"
-
-// Make sure the higher complexity pattern comes first
-// CHECK: TARGET_VAL(::ADD0)
-// CHECK: Complexity = {{[^-]}}
-// Make sure the ADD1 pattern has a negative complexity
-// CHECK: TARGET_VAL(::ADD1)
-// CHECK: Complexity = -{{[0-9]+}}
-
-def TestRC : RegisterClass<"TEST", [i32], 32, (add)>;
-
-def TestInstrInfo : InstrInfo;
-
-def Test : Target {
-  let InstructionSet = TestInstrInfo;
-}
-
-def ADD0 : Instruction {
-  let OutOperandList = (outs TestRC:$dst);
-  let InOperandList = (ins TestRC:$src0, TestRC:$src1);
-}
-
-def ADD1 : Instruction {
-  let OutOperandList = (outs TestRC:$dst);
-  let InOperandList = (ins TestRC:$src0, TestRC:$src1);
-}
-
-def : Pat <
-  (add i32:$src0, i32:$src1),
-  (ADD1 $src0, $src1)
-> {
-  let AddedComplexity = -1000;
-}
-
-def : Pat <
-   (add i32:$src0, i32:$src1),
-   (ADD0 $src0, $src1)
->;
diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index d195ba823b5..2602bbcf6f6 100644
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -771,7 +771,7 @@ static unsigned getPatternSize(const TreePatternNode *P,
 
 /// Compute the complexity metric for the input pattern.  This roughly
 /// corresponds to the number of nodes that are covered.
-int PatternToMatch::
+unsigned PatternToMatch::
 getPatternComplexity(const CodeGenDAGPatterns &CGP) const {
   return getPatternSize(getSrcPattern(), CGP) + getAddedComplexity();
 }
diff --git a/utils/TableGen/CodeGenDAGPatterns.h b/utils/TableGen/CodeGenDAGPatterns.h
index ef6c787c3e0..fb30cdd9485 100644
--- a/utils/TableGen/CodeGenDAGPatterns.h
+++ b/utils/TableGen/CodeGenDAGPatterns.h
@@ -667,7 +667,7 @@ public:
   PatternToMatch(Record *srcrecord, ListInit *preds,
                  TreePatternNode *src, TreePatternNode *dst,
                  const std::vector<Record*> &dstregs,
-                 int complexity, unsigned uid)
+                 unsigned complexity, unsigned uid)
     : SrcRecord(srcrecord), Predicates(preds), SrcPattern(src), DstPattern(dst),
       Dstregs(dstregs), AddedComplexity(complexity), ID(uid) {}
 
@@ -676,7 +676,7 @@ public:
   TreePatternNode *SrcPattern;  // Source pattern to match.
   TreePatternNode *DstPattern;  // Resulting pattern.
   std::vector<Record*> Dstregs; // Physical register defs being matched.
-  int              AddedComplexity; // Add to matching pattern complexity.
+  unsigned         AddedComplexity; // Add to matching pattern complexity.
   unsigned         ID;          // Unique ID for the record.
 
   Record          *getSrcRecord()  const { return SrcRecord; }
@@ -684,13 +684,13 @@ public:
   TreePatternNode *getSrcPattern() const { return SrcPattern; }
   TreePatternNode *getDstPattern() const { return DstPattern; }
   const std::vector<Record*> &getDstRegs() const { return Dstregs; }
-  int         getAddedComplexity() const { return AddedComplexity; }
+  unsigned         getAddedComplexity() const { return AddedComplexity; }
 
   std::string getPredicateCheck() const;
 
   /// Compute the complexity metric for the input pattern.  This roughly
   /// corresponds to the number of nodes that are covered.
-  int getPatternComplexity(const CodeGenDAGPatterns &CGP) const;
+  unsigned getPatternComplexity(const CodeGenDAGPatterns &CGP) const;
 };
 
 class CodeGenDAGPatterns {
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp
index e2e6ab19cba..82682cd5a5a 100644
--- a/utils/TableGen/DAGISelEmitter.cpp
+++ b/utils/TableGen/DAGISelEmitter.cpp
@@ -94,8 +94,8 @@ struct PatternSortingPredicate {
     // Otherwise, if the patterns might both match, sort based on complexity,
     // which means that we prefer to match patterns that cover more nodes in the
     // input over nodes that cover fewer.
-    int LHSSize = LHS->getPatternComplexity(CGP);
-    int RHSSize = RHS->getPatternComplexity(CGP);
+    unsigned LHSSize = LHS->getPatternComplexity(CGP);
+    unsigned RHSSize = RHS->getPatternComplexity(CGP);
     if (LHSSize > RHSSize) return true;   // LHS -> bigger -> less cost
     if (LHSSize < RHSSize) return false;