dolphin/Source
Lioncash 09271f365a PowerPC/ConditionRegister: Mark PPCToInternal() as constexpr
This allows the compiler to eliminate a static constructor that
initializes the table, and instead precompute all of the data ahead of
time.

e.g. We get something like so on GCC without constexpr:

_GLOBAL__sub_I_PowerPC::ConditionRegister::s_crTable:
        movdqa  xmm0, XMMWORD PTR .LC0[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip], xmm0
        movdqa  xmm0, XMMWORD PTR .LC1[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+16], xmm0
        movdqa  xmm0, XMMWORD PTR .LC2[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+32], xmm0
        movdqa  xmm0, XMMWORD PTR .LC3[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+48], xmm0
        movdqa  xmm0, XMMWORD PTR .LC4[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+64], xmm0
        movdqa  xmm0, XMMWORD PTR .LC5[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+80], xmm0
        movdqa  xmm0, XMMWORD PTR .LC6[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+96], xmm0
        movdqa  xmm0, XMMWORD PTR .LC7[rip]
        movaps  XMMWORD PTR PowerPC::ConditionRegister::s_crTable[rip+112], xmm0
        ret
PowerPC::ConditionRegister::s_crTable:
        .zero   128
.LC0:
        .quad   -9223372032559808511
        .quad   -8646911280256385023
.LC1:
        .quad   -9223372032559808512
        .quad   -8646911280256385024
.LC2:
        .quad   4294967297
        .quad   576460756598390785
.LC3:
        .quad   4294967296
        .quad   576460756598390784
.LC4:
        .quad   -4611686014132420607
        .quad   -4035225261828997119
.LC5:
        .quad   -4611686014132420608
        .quad   -4035225261828997120
.LC6:
        .quad   4611686022722355201
        .quad   5188146775025778689
.LC7:
        .quad   4611686022722355200
        .quad   5188146775025778688

and with constexpr, this all get collapsed into:

PowerPC::ConditionRegister::s_crTable:
        .quad   -9223372032559808511
        .quad   -8646911280256385023
        .quad   -9223372032559808512
        .quad   -8646911280256385024
        .quad   4294967297
        .quad   576460756598390785
        .quad   4294967296
        .quad   576460756598390784
        .quad   -4611686014132420607
        .quad   -4035225261828997119
        .quad   -4611686014132420608
        .quad   -4035225261828997120
        .quad   4611686022722355201
        .quad   5188146775025778689
        .quad   4611686022722355200
        .quad   5188146775025778688

completely eliminating the static constructor. MSVC also exhibits this,
whereas clang is a little better and does this anyway, even without
constexpr.
2023-06-08 14:33:13 -04:00
..
Android Merge pull request #11694 from jnaidu360/skylanders-portal-window 2023-06-06 19:20:39 +02:00
Core PowerPC/ConditionRegister: Mark PPCToInternal() as constexpr 2023-06-08 14:33:13 -04:00
DSPSpy DSPSpy: Add st3 BLOOP{,I} tests. 2022-09-30 11:07:41 +00:00
DSPTool Use GNUInstallDirs for installation paths 2023-01-30 09:44:44 -06:00
PCH bump minimum VS version to 17.6 2023-05-16 20:21:36 -07:00
UnitTests Core: Assert that only the Host thread may call PauseAndLock(). 2023-06-02 18:51:43 +02:00
VSProps windows: update to qt 6.5.1 2023-05-26 15:37:55 -07:00
.clang-format Replace Cpp11 (A Deprecated alias for Latest) in .clang-format 2022-06-22 08:57:32 +10:00
CMakeLists.txt Revert "Android: Don't hold gameFileCache lock during updateAdditionalMetadata" 2022-09-27 19:06:05 +02:00
dolphin-emu.sln Added rcheevos to Externals 2023-04-02 08:28:23 -04:00