Correctly set is_int_min_poison (#3427)

As is, is_int_min_poison isn't getting set correctly; the LLVM constant
being passed to the builder is being interpreted as a C++ bool, so it's
always true. Set it correctly and add mlir test to ensure this.

lib/Conversion/TritonGPUToLLVM/ElementwiseOpToLLVM.cpp

@@ -510,10 +510,8 @@ struct AbsIOpConversion
  ConversionPatternRewriter &rewriter,
  Type elemTy, MultipleOperandsRange operands,
  Location loc) const {
- auto boolFalse = rewriter.getBoolAttr(false);
- auto constFalse = rewriter.create<LLVM::ConstantOp>(loc, boolFalse);
  return {rewriter.create<LLVM::AbsOp>(loc, elemTy, operands[0][0],
- /*is_int_min_poison=*/constFalse)};
+ /*is_int_min_poison=*/false)};
  }
 };
 

test/Conversion/tritongpu_to_llvm.mlir

@@ -1549,3 +1549,15 @@ module attributes {"triton_gpu.compute-capability" = 90 : i32, "triton_gpu.num-c
  tt.return
  }
 }
+
+// -----
+
+#blocked0 = #triton_gpu.blocked<{sizePerThread = [2], threadsPerWarp = [32], warpsPerCTA = [4], order = [0], CTAsPerCGA = [1], CTASplitNum = [1], CTAOrder = [0]}>
+module attributes {"triton_gpu.num-ctas" = 1 : i32, "triton_gpu.num-warps" = 4 : i32} {
+ // CHECK-LABEL: abs_is_int_min_poison
+ // CHECK: %{{.*}} = "llvm.intr.abs"(%{{.*}}) <{is_int_min_poison = false}> : (i32) -> i32
+ tt.func @abs_is_int_min_poison(%arg0 : tensor<256xi32, #blocked0>) {
+ %abs = math.absi %arg0 : tensor<256xi32, #blocked0>
+ tt.return
+ }
+}