From a3a019cf90d55ad46c04c0f9ffa9c7fc2c19f36d Mon Sep 17 00:00:00 2001 From: Manman Ren Date: Fri, 18 Mar 2016 23:44:37 +0000 Subject: [CXX_FAST_TLS] Fix issues in ARM. We need to be careful on which registers can be explicitly handled via copies. Prologue, Epilogue use physical registers and if one belongs to the set of CSRsViaCopy, it will no longer be CSRed, since PEI overwrites it after the explicit copies. llvm-svn: 263857 --- llvm/lib/Target/ARM/ARMCallingConv.td | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'llvm/lib/Target/ARM/ARMCallingConv.td') diff --git a/llvm/lib/Target/ARM/ARMCallingConv.td b/llvm/lib/Target/ARM/ARMCallingConv.td index 847ef87c1b2..0ca9007cf13 100644 --- a/llvm/lib/Target/ARM/ARMCallingConv.td +++ b/llvm/lib/Target/ARM/ARMCallingConv.td @@ -235,10 +235,11 @@ def CSR_iOS_CXX_TLS : CalleeSavedRegs<(add CSR_iOS, (sequence "R%u", 12, 1), (sequence "D%u", 31, 0))>; // CSRs that are handled by prologue, epilogue. -def CSR_iOS_CXX_TLS_PE : CalleeSavedRegs<(add LR)>; +def CSR_iOS_CXX_TLS_PE : CalleeSavedRegs<(add LR, R12, R11, R7, R5, R4)>; // CSRs that are handled explicitly via copies. -def CSR_iOS_CXX_TLS_ViaCopy : CalleeSavedRegs<(sub CSR_iOS_CXX_TLS, LR)>; +def CSR_iOS_CXX_TLS_ViaCopy : CalleeSavedRegs<(sub CSR_iOS_CXX_TLS, + CSR_iOS_CXX_TLS_PE)>; // The "interrupt" attribute is used to generate code that is acceptable in // exception-handlers of various kinds. It makes us use a different return -- cgit v1.2.3