AMDGPU: Remove export and related instructions from gfx1250 support (#145624)

Author: changpeng

llvm/lib/Target/AMDGPU/AMDGPU.td

@@ -2361,7 +2361,7 @@ def HasFormattedMUBUFInsts : Predicate<"Subtarget->hasFormattedMUBUFInsts()">,
   AssemblerPredicate<(all_of (not FeatureGFX1250Insts))>;
 
 def HasExportInsts : Predicate<"Subtarget->hasExportInsts()">,
-  AssemblerPredicate<(all_of (not FeatureGFX90AInsts))>;
+  AssemblerPredicate<(all_of (not FeatureGFX90AInsts), (not FeatureGFX1250Insts))>;
 
 def HasVINTERPEncoding : Predicate<"Subtarget->hasVINTERPEncoding()">,
   AssemblerPredicate<(all_of FeatureGFX11Insts)>;

llvm/lib/Target/AMDGPU/EXPInstructions.td

@@ -119,6 +119,7 @@ multiclass VEXPORT_Real_gfx12 {
   def _gfx12 : EXP_Real_Row<ps, SIEncodingFamily.GFX12, "export">,
     EXPe_Row {
     let AssemblerPredicate = isGFX12Only;
+    let OtherPredicates = [HasExportInsts];
     let DecoderNamespace = "GFX12";
     let row = ps.row;
     let done = ps.done;

llvm/lib/Target/AMDGPU/GCNSubtarget.h

@@ -694,7 +694,7 @@ class GCNSubtarget final : public AMDGPUGenSubtargetInfo,
   bool hasFormattedMUBUFInsts() const { return !hasGFX1250Insts(); }
 
   bool hasExportInsts() const {
-    return !hasGFX940Insts();
+    return !hasGFX940Insts() && !hasGFX1250Insts();
   }
 
   bool hasVINTERPEncoding() const {

llvm/test/MC/AMDGPU/gfx1250_asm_unsupported.s

@@ -1,5 +1,43 @@
 ; RUN: not llvm-mc -triple=amdgcn -mcpu=gfx1250 -show-encoding %s 2>&1 | FileCheck --check-prefix=GFX1250-ERR --implicit-check-not=error: --strict-whitespace %s
 
+;; Export, S_WAIT_EXPCNT and S_WAIT_EVENT
+
+export mrt0 off, off, off, off
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+export mrt7 v1, v1, v1, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+export mrtz v4, v3, v2, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+export pos0 v4, v3, v2, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+export pos3 v4, v3, v2, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+exp mrt0 off, off, off, off
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+exp mrt7 v1, v1, v1, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+exp mrtz v4, v3, v2, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+exp pos0 v4, v3, v2, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+exp pos3 v4, v3, v2, v1
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+s_wait_event 0x3141
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
+s_wait_expcnt 0x1234
+// GFX1250-ERR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction not supported on this GPU
+
 ;; Ray Tracing: DS_BVH_STACK ops
 
 ds_bvh_stack_rtn_b32 v255, v254, v253, v[249:252]