AMDPGU/SI: Use AssertZext node to mask high bit for scratch offsets

[oota-llvm.git] / lib / Target / AMDGPU / AMDGPU.td

diff --git a/lib/Target/AMDGPU/AMDGPU.td b/lib/Target/AMDGPU/AMDGPU.td
index 2e7e39a54d3385f9ca9430345e0221037d8169dd..68b50504ee4449d77f8bae1bcdf223de5c3b5146 100644 (file)
--- a/lib/Target/AMDGPU/AMDGPU.td
+++ b/lib/Target/AMDGPU/AMDGPU.td
@@ -98,6 +98,16 @@ def FeatureEnableLoadStoreOpt : SubtargetFeature <"load-store-opt",
         "true",
         "Enable SI load/store optimizer pass">;
 
+// Performance debugging feature. Allow using DS instruction immediate
+// offsets even if the base pointer can't be proven to be base. On SI,
+// base pointer values that won't give the same result as a 16-bit add
+// are not safe to fold, but this will override the conservative test
+// for the base pointer.
+def FeatureEnableUnsafeDSOffsetFolding : SubtargetFeature <"unsafe-ds-offset-folding",
+        "EnableUnsafeDSOffsetFolding",
+        "true",
+        "Force using DS instruction immediate offsets on SI">;
+
 def FeatureFlatAddressSpace : SubtargetFeature<"flat-address-space",
         "FlatAddressSpace",
         "true",
@@ -113,6 +123,11 @@ def FeatureSGPRInitBug : SubtargetFeature<"sgpr-init-bug",
         "true",
         "VI SGPR initilization bug requiring a fixed SGPR allocation size">;
 
+def FeatureEnableHugeScratchBuffer : SubtargetFeature<"huge-scratch-buffer",
+        "EnableHugeScratchBuffer",
+        "true",
+        "Enable scratch buffer sizes greater than 128 GB">;
+
 class SubtargetFeatureFetchLimit <string Value> :
                           SubtargetFeature <"fetch"#Value,
         "TexVTXClauseSize",
@@ -141,6 +156,19 @@ class SubtargetFeatureLDSBankCount <int Value> : SubtargetFeature <
 def FeatureLDSBankCount16 : SubtargetFeatureLDSBankCount<16>;
 def FeatureLDSBankCount32 : SubtargetFeatureLDSBankCount<32>;
 
+class SubtargetFeatureISAVersion <int Major, int Minor, int Stepping>
+                                 : SubtargetFeature <
+      "isaver"#Major#"."#Minor#"."#Stepping,
+      "IsaVersion",
+      "ISAVersion"#Major#"_"#Minor#"_"#Stepping,
+      "Instruction set version number"
+>;
+
+def FeatureISAVersion7_0_0 : SubtargetFeatureISAVersion <7,0,0>;
+def FeatureISAVersion7_0_1 : SubtargetFeatureISAVersion <7,0,1>;
+def FeatureISAVersion8_0_0 : SubtargetFeatureISAVersion <8,0,0>;
+def FeatureISAVersion8_0_1 : SubtargetFeatureISAVersion <8,0,1>;
+
 class SubtargetFeatureLocalMemorySize <int Value> : SubtargetFeature<
         "localmemorysize"#Value,
         "LocalMemorySize",