AMDHSA: Fix COMPUTE_PGM_RSRC2.USER_SGPR calculation when parsing ISA assembly

kzhuravl · kzhuravl · commit 88268e3e3607 · 2019-03-20T19:44:47.000Z
It must match https://llvm.org/docs/AMDGPUUsage.html#initial-kernel-execution-state Differential Revision: https://reviews.llvm.org/D59570 llvm-svn: 356603
diff --git a/llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp b/llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
@@ -2958,37 +2958,37 @@ bool AMDGPUAsmParser::ParseDirectiveAMDHSAKernel() {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_BUFFER,
                        Val, ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 4;
     } else if (ID == ".amdhsa_user_sgpr_dispatch_ptr") {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_PTR, Val,
                        ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 2;
     } else if (ID == ".amdhsa_user_sgpr_queue_ptr") {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_QUEUE_PTR, Val,
                        ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 2;
     } else if (ID == ".amdhsa_user_sgpr_kernarg_segment_ptr") {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_KERNARG_SEGMENT_PTR,
                        Val, ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 2;
     } else if (ID == ".amdhsa_user_sgpr_dispatch_id") {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_ID, Val,
                        ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 2;
     } else if (ID == ".amdhsa_user_sgpr_flat_scratch_init") {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_FLAT_SCRATCH_INIT, Val,
                        ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 2;
     } else if (ID == ".amdhsa_user_sgpr_private_segment_size") {
       PARSE_BITS_ENTRY(KD.kernel_code_properties,
                        KERNEL_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_SIZE,
                        Val, ValRange);
-      UserSGPRCount++;
+      UserSGPRCount += 1;
     } else if (ID == ".amdhsa_system_sgpr_private_segment_wavefront_offset") {
       PARSE_BITS_ENTRY(
           KD.compute_pgm_rsrc2,
diff --git a/llvm/test/MC/AMDGPU/hsa-v3.s b/llvm/test/MC/AMDGPU/hsa-v3.s
@@ -34,7 +34,7 @@
 // OBJDUMP-NEXT: 0040 01000000 01000000 00000000 00000000
 // OBJDUMP-NEXT: 0050 00000000 00000000 00000000 00000000
 // OBJDUMP-NEXT: 0060 00000000 00000000 00000000 00000000
-// OBJDUMP-NEXT: 0070 c2500104 0f0f007f 7f000000 00000000
+// OBJDUMP-NEXT: 0070 c2500104 1f0f007f 7f000000 00000000
 // special_sgpr
 // OBJDUMP-NEXT: 0080 00000000 00000000 00000000 00000000
 // OBJDUMP-NEXT: 0090 00000000 00000000 00000000 00000000
