[Mlir-commits] [mlir] 920d5bb - [mlir] Set implicit operation loc to start of split. (#151499)

[llvmlistbot at llvm.org]

Author: Jacques Pienaar
Date: 2025-07-31T15:54:36+02:00
New Revision: 920d5bbf0d3fff3bc0953957b896055ea653628c

URL: https://github.com/llvm/llvm-project/commit/920d5bbf0d3fff3bc0953957b896055ea653628c
DIFF: https://github.com/llvm/llvm-project/commit/920d5bbf0d3fff3bc0953957b896055ea653628c.diff

LOG: [mlir] Set implicit operation loc to start of split. (#151499)

Added: 
    

Modified: 
    mlir/lib/Parser/Parser.cpp
    mlir/test/IR/top-level.mlir

Removed: 
    


################################################################################
diff  --git a/mlir/lib/Parser/Parser.cpp b/mlir/lib/Parser/Parser.cpp
index e9b5e9269b78c..310680bcfb34f 100644
--- a/mlir/lib/Parser/Parser.cpp
+++ b/mlir/lib/Parser/Parser.cpp
@@ -17,14 +17,32 @@
 
 using namespace mlir;
 
+static std::pair<int64_t, int64_t>
+getLineAndColStart(const llvm::SourceMgr &sourceMgr) {
+  unsigned lastFileID = sourceMgr.getNumBuffers();
+  if (lastFileID == 1)
+    return {0, 0};
+
+  auto bufferID = sourceMgr.getMainFileID();
+  const llvm::MemoryBuffer *main = sourceMgr.getMemoryBuffer(bufferID);
+  const llvm::MemoryBuffer *last = sourceMgr.getMemoryBuffer(lastFileID);
+  // Exclude same start.
+  if (main->getBufferStart() < last->getBufferStart() &&
+      main->getBufferEnd() >= last->getBufferEnd()) {
+    return sourceMgr.getLineAndColumn(
+        llvm::SMLoc::getFromPointer(last->getBufferStart()), bufferID);
+  }
+  return {0, 0};
+}
+
 LogicalResult mlir::parseSourceFile(const llvm::SourceMgr &sourceMgr,
                                     Block *block, const ParserConfig &config,
                                     LocationAttr *sourceFileLoc) {
   const auto *sourceBuf = sourceMgr.getMemoryBuffer(sourceMgr.getMainFileID());
   if (sourceFileLoc) {
-    *sourceFileLoc = FileLineColLoc::get(config.getContext(),
-                                         sourceBuf->getBufferIdentifier(),
-                                         /*line=*/0, /*column=*/0);
+    auto [line, column] = getLineAndColStart(sourceMgr);
+    *sourceFileLoc = FileLineColLoc::get(
+        config.getContext(), sourceBuf->getBufferIdentifier(), line, column);
   }
   if (isBytecode(*sourceBuf))
     return readBytecodeFile(*sourceBuf, block, config);
@@ -37,9 +55,9 @@ mlir::parseSourceFile(const std::shared_ptr<llvm::SourceMgr> &sourceMgr,
   const auto *sourceBuf =
       sourceMgr->getMemoryBuffer(sourceMgr->getMainFileID());
   if (sourceFileLoc) {
-    *sourceFileLoc = FileLineColLoc::get(config.getContext(),
-                                         sourceBuf->getBufferIdentifier(),
-                                         /*line=*/0, /*column=*/0);
+    auto [line, column] = getLineAndColStart(*sourceMgr);
+    *sourceFileLoc = FileLineColLoc::get(
+        config.getContext(), sourceBuf->getBufferIdentifier(), line, column);
   }
   if (isBytecode(*sourceBuf))
     return readBytecodeFile(sourceMgr, block, config);

diff  --git a/mlir/test/IR/top-level.mlir b/mlir/test/IR/top-level.mlir
index e0adb4d823344..53896911aaaa8 100644
--- a/mlir/test/IR/top-level.mlir
+++ b/mlir/test/IR/top-level.mlir
@@ -6,10 +6,10 @@ func.func private @foo()
 
 // -----
 
-// expected-error at -9 {{source must contain a single top-level operation, found: 2}}
+// expected-error at -2 {{source must contain a single top-level operation, found: 2}}
 func.func private @bar()
 func.func private @baz()
 
 // -----
 
-// expected-error at -15 {{source must contain a single top-level operation, found: 0}}
+// expected-error at -2 {{source must contain a single top-level operation, found: 0}}