[PATCH] D139177: [LoongArch] Specify registers used for exception handling

[Lu Weining via Phabricator via cfe-commits]

SixWeining updated this revision to Diff 479553.
SixWeining added a comment.

Add clang test.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D139177/new/

https://reviews.llvm.org/D139177

Files:
  clang/lib/Basic/Targets/LoongArch.h
  clang/test/CodeGen/builtins-loongarch.c


Index: clang/test/CodeGen/builtins-loongarch.c
===================================================================
--- /dev/null
+++ clang/test/CodeGen/builtins-loongarch.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -Wall -Wno-unused-but-set-variable -Werror -triple 
loongarch32 -disable-O0-optnone -emit-llvm -o - %s | opt -S -passes=mem2reg | 
FileCheck %s
+// RUN: %clang_cc1 -Wall -Wno-unused-but-set-variable -Werror -triple 
loongarch64 -disable-O0-optnone -emit-llvm -o - %s | opt -S -passes=mem2reg | 
FileCheck %s
+
+void test_eh_return_data_regno(void) {
+  // CHECK: store volatile i32 4
+  // CHECK: store volatile i32 5
+  volatile int res;
+  res = __builtin_eh_return_data_regno(0);
+  res = __builtin_eh_return_data_regno(1);
+}
Index: clang/lib/Basic/Targets/LoongArch.h
===================================================================
--- clang/lib/Basic/Targets/LoongArch.h
+++ clang/lib/Basic/Targets/LoongArch.h
@@ -56,6 +56,14 @@
 
   ArrayRef<const char *> getGCCRegNames() const override;
 
+  int getEHDataRegisterNumber(unsigned RegNo) const override {
+    if (RegNo == 0)
+      return 4;
+    if (RegNo == 1)
+      return 5;
+    return -1;
+  }
+
   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
 
   bool validateAsmConstraint(const char *&Name,



Index: clang/test/CodeGen/builtins-loongarch.c
===================================================================
--- /dev/null
+++ clang/test/CodeGen/builtins-loongarch.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -Wall -Wno-unused-but-set-variable -Werror -triple loongarch32 -disable-O0-optnone -emit-llvm -o - %s | opt -S -passes=mem2reg | FileCheck %s
+// RUN: %clang_cc1 -Wall -Wno-unused-but-set-variable -Werror -triple loongarch64 -disable-O0-optnone -emit-llvm -o - %s | opt -S -passes=mem2reg | FileCheck %s
+
+void test_eh_return_data_regno(void) {
+  // CHECK: store volatile i32 4
+  // CHECK: store volatile i32 5
+  volatile int res;
+  res = __builtin_eh_return_data_regno(0);
+  res = __builtin_eh_return_data_regno(1);
+}
Index: clang/lib/Basic/Targets/LoongArch.h
===================================================================
--- clang/lib/Basic/Targets/LoongArch.h
+++ clang/lib/Basic/Targets/LoongArch.h
@@ -56,6 +56,14 @@
 
   ArrayRef<const char *> getGCCRegNames() const override;
 
+  int getEHDataRegisterNumber(unsigned RegNo) const override {
+    if (RegNo == 0)
+      return 4;
+    if (RegNo == 1)
+      return 5;
+    return -1;
+  }
+
   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
 
   bool validateAsmConstraint(const char *&Name,

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