[PATCH] D63417: [WIP][RISCV] Specify registers used for exception handling

[Edward Jones via Phabricator via cfe-commits]

edward-jones created this revision.
edward-jones added reviewers: asb, lewis-revill.
Herald added subscribers: cfe-commits, Jim, benna, psnobl, jocewei, PkmX, rkruppe, the_o, brucehoult, MartinMosbeck, rogfer01, zzheng, jrtc27, shiva0217, kito-cheng, niosHD, sabuasal, apazos, simoncook, johnrusso, rbar.
Herald added a project: clang.

Implements the handling of __builtin_eh_return_regno()

Work in progress as this is missing tests


Repository:
  rC Clang

https://reviews.llvm.org/D63417

Files:
  lib/Basic/Targets/RISCV.h


Index: lib/Basic/Targets/RISCV.h
===================================================================
--- lib/Basic/Targets/RISCV.h
+++ lib/Basic/Targets/RISCV.h
@@ -58,6 +58,15 @@
 
   ArrayRef<const char *> getGCCRegNames() const override;
 
+  int getEHDataRegisterNumber(unsigned RegNo) const override {
+    if (RegNo == 0)
+      return 10;
+    else if (RegNo == 1)
+      return 11;
+    else
+      return -1;
+  }
+
   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
 
   bool validateAsmConstraint(const char *&Name,


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