[llvm] [AMDGPU][MC] update USER_SGPR_COUNT bits for GFX1250 (PR #192579)

[Shilei Tian via llvm-commits]

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@@ -136,17 +136,21 @@ static uint64_t getPGMRSrc1Reg(const SIProgramInfo &ProgInfo,
   return Reg;
 }
 
-static uint64_t getComputePGMRSrc2Reg(const SIProgramInfo &ProgInfo) {
-  uint64_t Reg = S_00B84C_USER_SGPR(ProgInfo.UserSGPR) |
-                 S_00B84C_TRAP_HANDLER(ProgInfo.TrapHandlerEnable) |
-                 S_00B84C_TGID_X_EN(ProgInfo.TGIdXEnable) |
-                 S_00B84C_TGID_Y_EN(ProgInfo.TGIdYEnable) |
-                 S_00B84C_TGID_Z_EN(ProgInfo.TGIdZEnable) |
-                 S_00B84C_TG_SIZE_EN(ProgInfo.TGSizeEnable) |
-                 S_00B84C_TIDIG_COMP_CNT(ProgInfo.TIdIGCompCount) |
-                 S_00B84C_EXCP_EN_MSB(ProgInfo.EXCPEnMSB) |
-                 S_00B84C_LDS_SIZE(ProgInfo.LdsSize) |
-                 S_00B84C_EXCP_EN(ProgInfo.EXCPEnable);
+static uint64_t getComputePGMRSrc2Reg(const GCNSubtarget &ST,
+                                      const SIProgramInfo &ProgInfo) {
+  uint64_t Reg = ST.hasGFX1250Insts()
+                     ? ((ProgInfo.UserSGPR & 0x3F) << 0x1)
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shiltian wrote:

A second thought, this should be an error, maybe somewhere else, since the HW can only handle at most 32. Feeding a larger value would not work.

https://github.com/llvm/llvm-project/pull/192579