[Mlir-commits] [mlir] [mlir][arith] Add division regression tests (PR #98181)
Andrzej WarzyĆski
llvmlistbot at llvm.org
Fri Jul 19 13:03:01 PDT 2024
================
@@ -0,0 +1,108 @@
+// Tests division operations and their variants (e.g. ceil/floordiv, rem etc)
+
+// RUN: mlir-opt %s --arith-expand --test-lower-to-llvm | \
+// RUN: mlir-cpu-runner -e entry -entry-point-result=void \
+// RUN: --shared-libs=%mlir_c_runner_utils | \
+// RUN: FileCheck %s --match-full-lines
+
+func.func @divsi_i8(%v1 : i8, %v2 : i8) {
+ vector.print str "@divsi_i8\n"
+ %0 = arith.divsi %v1, %v2 : i8
+ vector.print %0 : i8
+ return
+}
+
+func.func @divsi_i1(%v1 : i1, %v2 : i1) {
+ vector.print str "@divsi_i1\n"
+ %0 = arith.divsi %v1, %v2 : i1
+ vector.print %0 : i1
+ return
+}
+
+func.func @remsi_i8(%v1 : i8, %v2 : i8) {
+ vector.print str "@remsi_i8\n"
+ %0 = arith.remsi %v1, %v2 : i8
+ vector.print %0 : i8
+ return
+}
+
+func.func @ceildivsi_i8(%v1 : i8, %v2 : i8) {
+ vector.print str "@ceildivsi_i8\n"
+ %0 = arith.ceildivsi %v1, %v2 : i8
+ vector.print %0 : i8
+ return
+}
+
+func.func @divsi() {
+ // ------------------------------------------------
+ // Test i8
+ // ------------------------------------------------
+ %c68 = arith.constant 68 : i8
+ %cn97 = arith.constant -97 : i8
+
+ // divsi should round towards zero (rather than -infinity)
+ // divsi -97 68 = -1
+ // CHECK-LABEL: @divsi_i8
+ // CHECK-NEXT: -1
+ func.call @divsi_i8(%cn97, %c68) : (i8, i8) -> ()
+
+ // ------------------------------------------------
+ // Test i1
+ // ------------------------------------------------
+ %false = arith.constant false
+ %true = arith.constant true
+
+ // CHECK-LABEL: @divsi_i1
+ // CHECK-NEXT: 1
+ func.call @divsi_i1(%true, %true) : (i1, i1) -> ()
+
+ // ------------------------------------------------
+ // TODO: i16, i32 etc
+ // ------------------------------------------------
+ return
+}
+
+func.func @remsi() {
+ // ------------------------------------------------
+ // Test i8
+ // ------------------------------------------------
+ %cn1 = arith.constant -1 : i8
+ %i8_min_p1 = arith.constant -127 : i8
+
+ // remsi minIntPlus1 -1 = remsi -2^(w-1) -1 = 0
+ // CHECK-LABEL: @remsi_i8
+ // CHECK-NEXT: 0
+ func.call @remsi_i8(%i8_min_p1, %cn1) : (i8, i8) -> ()
+
+ // ------------------------------------------------
+ // TODO: i1, i16 etc
+ // ------------------------------------------------
+ return
+}
+
+func.func @ceildivsi() {
+ // ------------------------------------------------
+ // Test i8
+ // ------------------------------------------------
+ %c7 = arith.constant 7 : i8
+ %i8_min = arith.constant -128 : i8
+
+ // ceildivsi should keep signs
+ // forall w, y. (w > 0, y > 0) => -2^w `ceildiv` y : i_w < 0
----------------
banach-space wrote:
What's `i_w`? As in , what does it stand for?
https://github.com/llvm/llvm-project/pull/98181
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