OpenXLA-specific changes.

- Disable short pointer.
- Fixup expensiveLoadOrStore().

BUILD

@@ -53,6 +53,11 @@ _no_unused_variable = select({
     "//conditions:default": ["-Wno-unused-variable"],
 })
 
+_no_unused_variable_no_parentheses = select({
+    ":compiler_is_msvc": [],
+    "//conditions:default": ["-Wno-unused-variable -Wno-parentheses"],
+})
+
 td_library(
     name = "td_files",
     srcs = glob(["include/triton/**/*.td"]),
@@ -350,6 +355,7 @@ cc_library(
     name = "TritonTransforms",
     srcs = glob(["lib/Dialect/Triton/Transforms/*.cpp"]),
     hdrs = glob(["include/triton/Dialect/Triton/Transforms/*.h"]),
+    copts = ["-Wno-parentheses"],
     includes = ["include"],
     deps = [
         ":TritonDialects",
@@ -413,7 +419,7 @@ cc_library(
         "include/triton/Tools/Sys/*.hpp",
         "include/triton/Conversion/TritonGPUToLLVM/*.h",
     ]),
-    copts = _no_unused_variable,
+    copts = _no_unused_variable_no_parentheses,
     includes = [
         "include",
         "lib/Conversion/TritonGPUToLLVM",

lib/Analysis/Utility.cpp

@@ -125,7 +125,7 @@ unsigned ReduceOpHelper::getScratchSizeInBytes() {
 
   unsigned bytesPerElem = 0;
   for (const auto &ty : srcElementTypes) {
-    bytesPerElem += ty.getIntOrFloatBitWidth() / 8;
+    bytesPerElem += (ty.getIntOrFloatBitWidth() + 7) / 8;
   }
   return bytesPerElem * elems;
 }

lib/Dialect/TritonGPU/Transforms/AccelerateMatmul.cpp

@@ -91,7 +91,7 @@ class BlockedToMMA : public mlir::RewritePattern {
     int finalBitWidth = getElementTypeOrSelf(x).getIntOrFloatBitWidth();
     int origBitWidth = finalBitWidth;
     SetVector<Operation *> slice;
-    mlir::getBackwardSlice(x, &slice, bwdFilter);
+    mlir::getBackwardSlice(x, &slice, {{bwdFilter}});
     Operation *firstOp = slice.empty() ? nullptr : *slice.begin();
     if (firstOp)
       if (Value arg = firstOp->getOperand(0))

lib/Dialect/TritonGPU/Transforms/Utility.cpp

@@ -93,6 +93,11 @@ bool isExpensiveLoadOrStore(Operation *op, Attribute &targetEncoding) {
   // same
   if (isSingleValue(op->getOperand(0)))
     return false;
+  // TODO(manany): Investigate with Openai why the change here
+  // https://github.com/openai/triton/commit/640f3c392184cd14291c1bca6a4795eb0f32a61a
+  // which introduces Case 2 causes breakage to this test
+  // //third_party/py/jax_triton/tests:pallas_test_sm80 --test_filter=test_fused_attention_bwd
+  return true;
   // Case 2: Tensor of pointers has more threads than elements
   // we can presume a high hit-rate that makes it cheap to load
   auto ptrType = op->getOperand(0).getType().cast<RankedTensorType>();

lib/Target/PTX/PTXTranslation.cpp

@@ -49,7 +49,7 @@ std::string translateLLVMIRToPTX(llvm::Module &module, int cc, int version) {
   auto *shortPtr =
       static_cast<llvm::cl::opt<bool> *>(options["nvptx-short-ptr"]);
   assert(shortPtr);
-  shortPtr->setValue(true);
+  shortPtr->setValue(false);
   std::string sm = cc == 90 ? "sm_90a" : "sm_" + std::to_string(cc);
   // max PTX version
   int ptxMajor = maxPTX / 10;

test/TritonGPU/combine.mlir

@@ -69,18 +69,6 @@ tt.func @remat_single_value(%arg: !tt.ptr<i32> {tt.divisibility = 16 : i32}) {
   tt.return
 }
 
-tt.func @remat_fast_load(%arg: !tt.ptr<i32> {tt.divisibility = 16 : i32}) {
-  %0 = tt.splat %arg : (!tt.ptr<i32>) -> tensor<16x!tt.ptr<i32>, #layout1>
-  %1 = tt.make_range {end = 16 : i32, start = 0 : i32} : tensor<16xi32, #layout1>
-  %2 = tt.addptr %0, %1 : tensor<16x!tt.ptr<i32>, #layout1>, tensor<16xi32, #layout1>
-  %3 = tt.load %2 {cache = 1 : i32, evict = 1 : i32, isVolatile = false} : tensor<16xi32, #layout1>
-  // CHECK-NOT: triton_gpu.convert_layout
-  %4 = triton_gpu.convert_layout %3 : (tensor<16xi32, #layout1>) -> tensor<16xi32, #layout0>
-  %5 = triton_gpu.convert_layout %2 : (tensor<16x!tt.ptr<i32>, #layout1>) -> tensor<16x!tt.ptr<i32>, #layout0>
-  tt.store %5, %4 : tensor<16xi32, #layout0>
-  tt.return
-}
-
 // CHECK-LABEL: if
 tt.func @if(%arg0: i32, %arg1: !tt.ptr<i32> {tt.divisibility = 16 : i32}) {
   // CHECK-NOT: triton_gpu.convert_layout