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| author | Dmitry Vyukov <dvyukov@google.com> | 2018-10-31 17:27:16 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2018-11-02 12:50:03 +0000 |
| commit | a1ee0a21cfd3d44f4585c1eb57698460abbfc7f1 (patch) | |
| tree | 6e7c8995841135b34540f25eac5a4a08e18e34ce /src/runtime/sys_windows_386.s | |
| parent | a86f549703c107c8b4d83d8e7527521c9e215d9a (diff) | |
| download | go-a1ee0a21cfd3d44f4585c1eb57698460abbfc7f1.tar.gz go-a1ee0a21cfd3d44f4585c1eb57698460abbfc7f1.zip | |
runtime, time: refactor startNano handling
Move startNano from runtime to time package.
In preparation for a subsequent change that speeds up Since and Until.
This also makes code simpler as we have less assembly as the result,
monotonic time handling is better localized in time package.
This changes values returned from nanotime on windows
(it does not account for startNano anymore), current comments state
that it's important, but it's unclear how it can be important
since no other OS does this.
Update #25729
Change-Id: I2275d57b7b5ed8fd0d53eb0f19d55a86136cc555
Reviewed-on: https://go-review.googlesource.com/c/146340
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/runtime/sys_windows_386.s')
| -rw-r--r-- | src/runtime/sys_windows_386.s | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/src/runtime/sys_windows_386.s b/src/runtime/sys_windows_386.s index babd91c936..e6d774e66f 100644 --- a/src/runtime/sys_windows_386.s +++ b/src/runtime/sys_windows_386.s @@ -455,9 +455,7 @@ loop: MULL CX IMULL $100, DI ADDL DI, DX - // wintime*100 = DX:AX, subtract startNano and return - SUBL runtime·startNano+0(SB), AX - SBBL runtime·startNano+4(SB), DX + // wintime*100 = DX:AX MOVL AX, ret_lo+0(FP) MOVL DX, ret_hi+4(FP) RET @@ -482,9 +480,6 @@ loop: IMULL $100, DI ADDL DI, DX // w*100 = DX:AX - // subtract startNano and save for return - SUBL runtime·startNano+0(SB), AX - SBBL runtime·startNano+4(SB), DX MOVL AX, mono+12(FP) MOVL DX, mono+16(FP) |