[PATCH] D145999: [RISCV] Reserve X18 by default for Android

[Aditya Kumar via Phabricator via cfe-commits]

hiraditya updated this revision to Diff 505378.
hiraditya added a comment.

Folded D145979 <https://reviews.llvm.org/D145979> here


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D145999/new/

https://reviews.llvm.org/D145999

Files:
  clang/test/Driver/sanitizer-ld.c
  llvm/lib/TargetParser/RISCVTargetParser.cpp
  llvm/test/CodeGen/RISCV/reserved-regs.ll


Index: llvm/test/CodeGen/RISCV/reserved-regs.ll
===================================================================
--- llvm/test/CodeGen/RISCV/reserved-regs.ll
+++ llvm/test/CodeGen/RISCV/reserved-regs.ll
@@ -58,6 +58,7 @@
 ; RUN: llc -mtriple=riscv64 -mattr=+reserve-x31 -verify-machineinstrs < %s | FileCheck %s -check-prefix=X31
 
 ; RUN: llc -mtriple=riscv64-fuchsia -verify-machineinstrs < %s | FileCheck %s -check-prefix=X18
+; RUN: llc -mtriple=riscv64-linux-android -verify-machineinstrs < %s | FileCheck %s -check-prefix=X18
 
 ; This program is free to use all registers, but needs a stack pointer for
 ; spill values, so do not test for reserving the stack pointer.
Index: llvm/lib/TargetParser/RISCVTargetParser.cpp
===================================================================
--- llvm/lib/TargetParser/RISCVTargetParser.cpp
+++ llvm/lib/TargetParser/RISCVTargetParser.cpp
@@ -103,7 +103,7 @@
 
 bool isX18ReservedByDefault(const Triple &TT) {
   // X18 is reserved for the ShadowCallStack ABI (even when not enabled).
-  return TT.isOSFuchsia();
+  return TT.isOSFuchsia() || TT.isAndroid();
 }
 
 } // namespace RISCV
Index: clang/test/Driver/sanitizer-ld.c
===================================================================
--- clang/test/Driver/sanitizer-ld.c
+++ clang/test/Driver/sanitizer-ld.c
@@ -743,6 +743,10 @@
 // RUN:   | FileCheck --check-prefix=CHECK-SHADOWCALLSTACK-LINUX-RISCV64 %s
 // CHECK-SHADOWCALLSTACK-LINUX-RISCV64: '-fsanitize=shadow-call-stack' only allowed with '-ffixed-x18'
 
+// RUN: %clang -target riscv64-linux-android -fsanitize=shadow-call-stack %s -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-SHADOWCALLSTACK-ANDROID-RISCV64
+// CHECK-SHADOWCALLSTACK-ANDROID-RISCV64-NOT: error:
+
 // RUN: %clang -fsanitize=shadow-call-stack -### %s 2>&1 \
 // RUN:     --target=riscv64-unknown-fuchsia -fuse-ld=ld \
 // RUN:   | FileCheck --check-prefix=CHECK-SHADOWCALLSTACK-FUCHSIA-RISCV64 %s


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