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| author | Keith Randall <khr@golang.org> | 2018-03-03 14:24:54 -0800 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2018-03-04 17:49:39 +0000 |
| commit | f6332bb84ad87e958290ae23b29a2b13a41ee2a2 (patch) | |
| tree | f09ef9174bee3ae86920a113318f4a322a1a98ad /src/runtime/asm_arm.s | |
| parent | 45964e4f9c950863adcaeb62fbe49f3fa913f27d (diff) | |
| download | go-f6332bb84ad87e958290ae23b29a2b13a41ee2a2.tar.xz | |
internal/bytealg: move compare functions to bytealg
Move bytes.Compare and runtime·cmpstring to bytealg.
Update #19792
Change-Id: I139e6d7c59686bef7a3017e3dec99eba5fd10447
Reviewed-on: https://go-review.googlesource.com/98515
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Diffstat (limited to 'src/runtime/asm_arm.s')
| -rw-r--r-- | src/runtime/asm_arm.s | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/src/runtime/asm_arm.s b/src/runtime/asm_arm.s index 423e1b9abb..d54dc62ba4 100644 --- a/src/runtime/asm_arm.s +++ b/src/runtime/asm_arm.s @@ -801,59 +801,6 @@ TEXT runtime·aeshashstr(SB),NOSPLIT|NOFRAME,$0-0 MOVW $0, R0 MOVW (R0), R1 -TEXT runtime·cmpstring(SB),NOSPLIT|NOFRAME,$0-20 - MOVW s1_base+0(FP), R2 - MOVW s1_len+4(FP), R0 - MOVW s2_base+8(FP), R3 - MOVW s2_len+12(FP), R1 - ADD $20, R13, R7 - B runtime·cmpbody(SB) - -TEXT bytes·Compare(SB),NOSPLIT|NOFRAME,$0-28 - MOVW s1+0(FP), R2 - MOVW s1+4(FP), R0 - MOVW s2+12(FP), R3 - MOVW s2+16(FP), R1 - ADD $28, R13, R7 - B runtime·cmpbody(SB) - -// On entry: -// R0 is the length of s1 -// R1 is the length of s2 -// R2 points to the start of s1 -// R3 points to the start of s2 -// R7 points to return value (-1/0/1 will be written here) -// -// On exit: -// R4, R5, and R6 are clobbered -TEXT runtime·cmpbody(SB),NOSPLIT|NOFRAME,$0-0 - CMP R2, R3 - BEQ samebytes - CMP R0, R1 - MOVW R0, R6 - MOVW.LT R1, R6 // R6 is min(R0, R1) - - ADD R2, R6 // R2 is current byte in s1, R6 is last byte in s1 to compare -loop: - CMP R2, R6 - BEQ samebytes // all compared bytes were the same; compare lengths - MOVBU.P 1(R2), R4 - MOVBU.P 1(R3), R5 - CMP R4, R5 - BEQ loop - // bytes differed - MOVW.LT $1, R0 - MOVW.GT $-1, R0 - MOVW R0, (R7) - RET -samebytes: - CMP R0, R1 - MOVW.LT $1, R0 - MOVW.GT $-1, R0 - MOVW.EQ $0, R0 - MOVW R0, (R7) - RET - TEXT runtime·return0(SB),NOSPLIT,$0 MOVW $0, R0 RET |