From bd583d00f96cd6e8bb0669e2aacc9dfad1eda2b1 Mon Sep 17 00:00:00 2001 From: Andreas Hansson Date: Fri, 15 May 2015 13:39:53 -0400 Subject: [PATCH] misc: Appease gcc 5.1 Three minor issues are resolved: 1. Apparently gcc 5.1 does not like negation of booleans followed by bitwise AND. 2. Somehow the compiler also gets confused and warns about NoopMachInst being unused (removing it causes compilation errors though). Most likely a compiler bug. 3. There seems to be a number of instances where loop unrolling causes false positives for the array-bounds check. For now, switch to std::array. Potentially we could disable the warning for newer gcc versions, but switching to std::array is probably a good move in any case. --- src/arch/x86/insts/microop.cc | 8 ++++---- src/arch/x86/isa_traits.hh | 2 +- src/cpu/base_dyn_inst.hh | 9 +++++---- src/cpu/o3/dyn_inst.hh | 6 ++++-- 4 files changed, 14 insertions(+), 11 deletions(-) diff --git a/src/arch/x86/insts/microop.cc b/src/arch/x86/insts/microop.cc index 4f464927a..35ee9efaa 100644 --- a/src/arch/x86/insts/microop.cc +++ b/src/arch/x86/insts/microop.cc @@ -55,7 +55,7 @@ namespace X86ISA case ConditionTests::EZF: return ccflags.ezf; case ConditionTests::SZnZF: - return !(!ccflags.ezf & ccflags.zf); + return !(!ccflags.ezf && ccflags.zf); case ConditionTests::MSTRZ: panic("This condition is not implemented!"); case ConditionTests::STRZ: @@ -63,7 +63,7 @@ namespace X86ISA case ConditionTests::MSTRC: panic("This condition is not implemented!"); case ConditionTests::STRZnEZF: - return !ccflags.ezf & ccflags.zf; + return !ccflags.ezf && ccflags.zf; //And no interrupts or debug traps are waiting case ConditionTests::OF: return ccflags.of; @@ -88,7 +88,7 @@ namespace X86ISA case ConditionTests::NotEZF: return !ccflags.ezf; case ConditionTests::NotSZnZF: - return !ccflags.ezf & ccflags.zf; + return !ccflags.ezf && ccflags.zf; case ConditionTests::NotMSTRZ: panic("This condition is not implemented!"); case ConditionTests::NotSTRZ: @@ -96,7 +96,7 @@ namespace X86ISA case ConditionTests::NotMSTRC: panic("This condition is not implemented!"); case ConditionTests::STRnZnEZF: - return !ccflags.ezf & !ccflags.zf; + return !ccflags.ezf && !ccflags.zf; //And no interrupts or debug traps are waiting case ConditionTests::NotOF: return !ccflags.of; diff --git a/src/arch/x86/isa_traits.hh b/src/arch/x86/isa_traits.hh index f4fdb59e5..6e5373ca1 100644 --- a/src/arch/x86/isa_traits.hh +++ b/src/arch/x86/isa_traits.hh @@ -68,7 +68,7 @@ namespace X86ISA const bool CurThreadInfoImplemented = false; const int CurThreadInfoReg = -1; - const ExtMachInst NoopMachInst = { + const ExtMachInst NoopMachInst M5_VAR_USED = { 0x0, // No legacy prefixes. 0x0, // No rex prefix. { OneByteOpcode, 0x90 }, // One opcode byte, 0x90. diff --git a/src/cpu/base_dyn_inst.hh b/src/cpu/base_dyn_inst.hh index 50b1b12ce..5b54679c9 100644 --- a/src/cpu/base_dyn_inst.hh +++ b/src/cpu/base_dyn_inst.hh @@ -46,6 +46,7 @@ #ifndef __CPU_BASE_DYN_INST_HH__ #define __CPU_BASE_DYN_INST_HH__ +#include #include #include #include @@ -258,22 +259,22 @@ class BaseDynInst : public ExecContext, public RefCounted /** Flattened register index of the destination registers of this * instruction. */ - TheISA::RegIndex _flatDestRegIdx[TheISA::MaxInstDestRegs]; + std::array _flatDestRegIdx; /** Physical register index of the destination registers of this * instruction. */ - PhysRegIndex _destRegIdx[TheISA::MaxInstDestRegs]; + std::array _destRegIdx; /** Physical register index of the source registers of this * instruction. */ - PhysRegIndex _srcRegIdx[TheISA::MaxInstSrcRegs]; + std::array _srcRegIdx; /** Physical register index of the previous producers of the * architected destinations. */ - PhysRegIndex _prevDestRegIdx[TheISA::MaxInstDestRegs]; + std::array _prevDestRegIdx; public: diff --git a/src/cpu/o3/dyn_inst.hh b/src/cpu/o3/dyn_inst.hh index 80d502f0e..6740c601d 100644 --- a/src/cpu/o3/dyn_inst.hh +++ b/src/cpu/o3/dyn_inst.hh @@ -44,6 +44,8 @@ #ifndef __CPU_O3_DYN_INST_HH__ #define __CPU_O3_DYN_INST_HH__ +#include + #include "arch/isa_traits.hh" #include "config/the_isa.hh" #include "cpu/o3/cpu.hh" @@ -108,13 +110,13 @@ class BaseO3DynInst : public BaseDynInst protected: /** Values to be written to the destination misc. registers. */ - MiscReg _destMiscRegVal[TheISA::MaxMiscDestRegs]; + std::array _destMiscRegVal; /** Indexes of the destination misc. registers. They are needed to defer * the write accesses to the misc. registers until the commit stage, when * the instruction is out of its speculative state. */ - short _destMiscRegIdx[TheISA::MaxMiscDestRegs]; + std::array _destMiscRegIdx; /** Number of destination misc. registers. */ uint8_t _numDestMiscRegs; -- 2.30.2