[PATCH] D79644: [mlir][StandardToSPIRV] Add support for lowering index_cast to SPIR-V.

[Han-Chung Wang via Phabricator via llvm-commits]

hanchung created this revision.
hanchung added reviewers: antiagainst, denis13, mravishankar.
Herald added subscribers: llvm-commits, Kayjukh, frgossen, grosul1, bader, Joonsoo, stephenneuendorffer, liufengdb, lucyrfox, mgester, arpith-jacob, nicolasvasilache, shauheen, jpienaar, rriddle, mehdi_amini, arphaman.
Herald added a project: LLVM.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79644

Files:
  mlir/lib/Conversion/StandardToSPIRV/ConvertStandardToSPIRV.cpp
  mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir


Index: mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir
===================================================================
--- mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir
+++ mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir
@@ -461,6 +461,20 @@
      max_compute_workgroup_size = dense<[128, 128, 64]> : vector<3xi32>}>
 } {
 
+// CHECK-LABEL: index_cast1
+func @index_cast1(%arg0: i16) {
+  // CHECK: spv.UConvert %{{.+}} : i16 to i32
+  %0 = index_cast %arg0 : i16 to index
+  return
+}
+
+// CHECK-LABEL: index_cast2
+func @index_cast2(%arg0: index) {
+  // CHECK: spv.UConvert %{{.+}} : i32 to i16
+  %0 = index_cast %arg0 : index to i16
+  return
+}
+
 // CHECK-LABEL: @fpext1
 func @fpext1(%arg0: f16) -> f64 {
   // CHECK: spv.FConvert %{{.*}} : f16 to f64
Index: mlir/lib/Conversion/StandardToSPIRV/ConvertStandardToSPIRV.cpp
===================================================================
--- mlir/lib/Conversion/StandardToSPIRV/ConvertStandardToSPIRV.cpp
+++ mlir/lib/Conversion/StandardToSPIRV/ConvertStandardToSPIRV.cpp
@@ -770,6 +770,7 @@
       BoolCmpIOpPattern, ConstantCompositeOpPattern, ConstantScalarOpPattern,
       CmpFOpPattern, CmpIOpPattern, IntLoadOpPattern, LoadOpPattern,
       ReturnOpPattern, SelectOpPattern, StoreOpPattern,
+      TypeCastingOpPattern<IndexCastOp, spirv::UConvertOp>,
       TypeCastingOpPattern<SIToFPOp, spirv::ConvertSToFOp>,
       TypeCastingOpPattern<ZeroExtendIOp, spirv::UConvertOp>,
       TypeCastingOpPattern<TruncateIOp, spirv::SConvertOp>,


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