LOVE/megasource
1
0
Fork 0
mirror of https://github.com/love2d/megasource.git synced 2026-08-20 12:40:06 +02:00
Code Issues Packages Projects Releases Wiki Activity

Update LuaJIT to LuaJIT/LuaJIT@03080b7

Browse Source
This commit is contained in:
Miku AuahDark
2022-08-25 18:33:56 +08:00
parent 27276a031d
commit 65e6adcbd1
69 changed files with 992 additions and 553 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libs/LuaJIT/src/vm_x86.dasc
+6 -42
View File
@@ -464,9 +464,6 @@
|.macro sseconst_1, reg, tmp // Synthesize 1.0.
| sseconst_hi reg, tmp, 3ff00000
|.endmacro
|.macro sseconst_m1, reg, tmp // Synthesize -1.0.
| sseconst_hi reg, tmp, bff00000
|.endmacro
|.macro sseconst_2p52, reg, tmp // Synthesize 2^52.
| sseconst_hi reg, tmp, 43300000
|.endmacro
@@ -2989,15 +2986,17 @@ static void build_subroutines(BuildCtx *ctx)
| addsd xmm1, xmm3 // (|x| + 2^52) - 2^52
| subsd xmm1, xmm3
| orpd xmm1, xmm2 // Merge sign bit back in.
| sseconst_1 xmm3, RDa
| .if mode == 1 // ceil(x)?
| sseconst_m1 xmm2, RDa // Must subtract -1 to preserve -0.
| cmpsd xmm0, xmm1, 6 // x > result?
| andpd xmm0, xmm3
| addsd xmm1, xmm0 // If yes, add 1.
| orpd xmm1, xmm2 // Merge sign bit back in (again).
| .else // floor(x)?
| sseconst_1 xmm2, RDa
| cmpsd xmm0, xmm1, 1 // x < result?
| andpd xmm0, xmm3
| subsd xmm1, xmm0 // If yes, subtract 1.
| .endif
| andpd xmm0, xmm2
| subsd xmm1, xmm0 // If yes, subtract +-1.
|.endif
| movaps xmm0, xmm1
|1:
@@ -3038,41 +3037,6 @@ static void build_subroutines(BuildCtx *ctx)
| subsd xmm0, xmm1
| ret
|
|// Args in xmm0/eax. Ret in xmm0. xmm0-xmm1 and eax modified.
|->vm_powi_sse:
| cmp eax, 1; jle >6 // i<=1?
| // Now 1 < (unsigned)i <= 0x80000000.
|1: // Handle leading zeros.
| test eax, 1; jnz >2
| mulsd xmm0, xmm0
| shr eax, 1
| jmp <1
|2:
| shr eax, 1; jz >5
| movaps xmm1, xmm0
|3: // Handle trailing bits.
| mulsd xmm0, xmm0
| shr eax, 1; jz >4
| jnc <3
| mulsd xmm1, xmm0
| jmp <3
|4:
| mulsd xmm0, xmm1
|5:
| ret
|6:
| je <5 // x^1 ==> x
| jb >7 // x^0 ==> 1
| neg eax
| call <1
| sseconst_1 xmm1, RDa
| divsd xmm1, xmm0
| movaps xmm0, xmm1
| ret
|7:
| sseconst_1 xmm0, RDa
| ret
|
|//-----------------------------------------------------------------------
|//-- Miscellaneous functions --------------------------------------------
|//-----------------------------------------------------------------------