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cmd/asm: add LCDBR instruction on s390x 

This CL is to add LCDBR assembly instruction mnemonics, mainly used in math package.

The LCDBR instruction has the same effect as the FNEG pseudo-instructions, just that it sets the flag.

Change-Id: I3f00f1ed19148d074c3b6c5f64af0772289f2802
Reviewed-on: https://go-review.googlesource.com/c/go/+/648036
Reviewed-by: Srinivas Pokala <Pokala.Srinivas@ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Munday <mike.munday@lowrisc.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Munday <mike.munday@lowrisc.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Vishwanatha HD 2025-02-10 10:50:59 +00:00 committed by Cherry Mui
parent 3ada42ffed
commit 4ae6ab2bdf
15 changed files with 34 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/cmd/asm/internal/asm/testdata/s390x.s vendored
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@ -401,6 +401,7 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
FMADDS F1, F2, F3 // b30e3012 FMADDS F1, F2, F3 // b30e3012
FMSUB F4, F5, F5 // b31f5045 FMSUB F4, F5, F5 // b31f5045
FMSUBS F6, F6, F7 // b30f7066 FMSUBS F6, F6, F7 // b30f7066
LCDBR F0, F2 // b3130020
LPDFR F1, F2 // b3700021 LPDFR F1, F2 // b3700021
LNDFR F3, F4 // b3710043 LNDFR F3, F4 // b3710043
CPSDR F5, F6, F7 // b3725076 CPSDR F5, F6, F7 // b3725076
@ -420,8 +421,8 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
KLMD R2, R8 // b93f0028 KLMD R2, R8 // b93f0028
KIMD R0, R4 // b93e0004 KIMD R0, R4 // b93e0004
KDSA R0, R8 // b93a0008 KDSA R0, R8 // b93a0008
KMA R2, R6, R4 // b9296024 KMA R2, R6, R4 // b9296024
KMCTR R2, R6, R4 // b92d6024 KMCTR R2, R6, R4 // b92d6024
// vector add and sub instructions // vector add and sub instructions
VAB V3, V4, V4 // e743400000f3 VAB V3, V4, V4 // e743400000f3

1
src/cmd/internal/obj/s390x/a.out.go
View File

@ -329,6 +329,7 @@ const (
AFNABS AFNABS
AFNEG AFNEG
AFNEGS AFNEGS
ALCDBR
ALEDBR ALEDBR
ALDEBR ALDEBR
ALPDFR ALPDFR

1
src/cmd/internal/obj/s390x/anames.go
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@ -96,6 +96,7 @@ var Anames = []string{
"FNABS", "FNABS",
"FNEG", "FNEG",
"FNEGS", "FNEGS",
"LCDBR",
"LEDBR", "LEDBR",
"LDEBR", "LDEBR",
"LPDFR", "LPDFR",

3
src/cmd/internal/obj/s390x/asmz.go
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@ -969,6 +969,7 @@ func buildop(ctxt *obj.Link) {
opset(ALNDFR, r) opset(ALNDFR, r)
opset(AFNEG, r) opset(AFNEG, r)
opset(AFNEGS, r) opset(AFNEGS, r)
opset(ALCDBR, r)
opset(ALEDBR, r) opset(ALEDBR, r)
opset(ALDEBR, r) opset(ALDEBR, r)
opset(AFSQRT, r) opset(AFSQRT, r)
@ -3373,6 +3374,8 @@ func (c *ctxtz) asmout(p *obj.Prog, asm *[]byte) {
opcode = op_LCDFR opcode = op_LCDFR
case AFNEGS: case AFNEGS:
opcode = op_LCEBR opcode = op_LCEBR
case ALCDBR:
opcode = op_LCDBR
case ALEDBR: case ALEDBR:
opcode = op_LEDBR opcode = op_LEDBR
case ALDEBR: case ALDEBR:

4
src/math/acos_s390x.s
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@ -121,7 +121,7 @@ L4:
L12: L12:
FMOVD 24(R9), F0 FMOVD 24(R9), F0
FMADD F10, F10, F0 FMADD F10, F10, F0
WORD $0xB3130080 //lcdbr %f8,%f0 LCDBR F0, F8
WORD $0xED009008 //cdb %f0,.L37-.L13(%r9) WORD $0xED009008 //cdb %f0,.L37-.L13(%r9)
BYTE $0x00 BYTE $0x00
BYTE $0x19 BYTE $0x19
@ -129,7 +129,7 @@ L12:
L5: L5:
MOVW R12, R4 MOVW R12, R4
CMPBLE R4, $0, L7 CMPBLE R4, $0, L7
WORD $0xB31300AA //lcdbr %f10,%f10 LCDBR F10, F10
FMOVD $0, F1 FMOVD $0, F1
BR L3 BR L3
L9: L9:

4
src/math/asin_s390x.s
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@ -139,7 +139,7 @@ L4:
L14: L14:
FMOVD 200(R9), F0 FMOVD 200(R9), F0
FMADD F8, F8, F0 FMADD F8, F8, F0
WORD $0xB31300A0 //lcdbr %f10,%f0 LCDBR F0, F10
WORD $0xED009020 //cdb %f0,.L39-.L15(%r9) WORD $0xED009020 //cdb %f0,.L39-.L15(%r9)
BYTE $0x00 BYTE $0x00
BYTE $0x19 BYTE $0x19
@ -147,7 +147,7 @@ L14:
L6: L6:
MOVW R7, R6 MOVW R7, R6
CMPBLE R6, $0, L8 CMPBLE R6, $0, L8
WORD $0xB3130088 //lcdbr %f8,%f8 LCDBR F8, F8
FMOVD 24(R9), F1 FMOVD 24(R9), F1
BR L4 BR L4
L10: L10:

6
src/math/asinh_s390x.s
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@ -174,7 +174,7 @@ L6:
MOVD R12, R6 MOVD R12, R6
CMPBGT R6, $0, L1 CMPBGT R6, $0, L1
WORD $0xB3130000 //lcdbr %f0,%f0 LCDBR F0, F0
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
RET RET
L16: L16:
@ -206,8 +206,8 @@ L16:
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
RET RET
L17: L17:
WORD $0xB31300A0 //lcdbr %f10,%f0 LCDBR F0, F10
BR L4 BR L4
L15: L15:
WORD $0xB31300A0 //lcdbr %f10,%f0 LCDBR F0, F10
BR L9 BR L9

6
src/math/atan2_s390x.s
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@ -244,16 +244,16 @@ L17:
WFDDB V0, V2, V4 WFDDB V0, V2, V4
BYTE $0x18 //lr %r2,%r5 BYTE $0x18 //lr %r2,%r5
BYTE $0x25 BYTE $0x25
WORD $0xB3130034 //lcdbr %f3,%f4 LCDBR F4, F3
BR L3 BR L3
L23: L23:
WORD $0xB3130062 //lcdbr %f6,%f2 LCDBR F2, F6
BR L4 BR L4
L22: L22:
VLR V20, V0 VLR V20, V0
BR L9 BR L9
L21: L21:
WORD $0xB3130022 //lcdbr %f2,%f2 LCDBR F2, F2
BR L8 BR L8
L24: L24:
VLR V20, V4 VLR V20, V4

4
src/math/erfc_s390x.s
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@ -355,7 +355,7 @@ L10:
WFMADB V0, V5, V3, V5 WFMADB V0, V5, V3, V5
BR L11 BR L11
L35: L35:
WORD $0xB3130010 //lcdbr %f1,%f0 LCDBR F0, F1
BR L9 BR L9
L36: L36:
FMOVD 304(R9), F3 FMOVD 304(R9), F3
@ -436,7 +436,7 @@ L30:
L20: L20:
FMOVD 88(R9), F0 FMOVD 88(R9), F0
WFMADB V7, V2, V0, V2 WFMADB V7, V2, V0, V2
WORD $0xB3130022 //lcdbr %f2,%f2 LCDBR F2, F2
FMOVD F2, ret+8(FP) FMOVD F2, ret+8(FP)
RET RET
L13: L13:

2
src/math/exp_s390x.s
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@ -116,7 +116,7 @@ L16:
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
RET RET
L20: L20:
WORD $0xB3130020 //lcdbr %f2,%f0 LCDBR F0, F2
BR L2 BR L2
L6: L6:
MOVD $·expxaddexp<>+0(SB), R1 MOVD $·expxaddexp<>+0(SB), R1

10
src/math/expm1_s390x.s
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@ -100,14 +100,14 @@ L2:
FMOVD 16(R5), F6 FMOVD 16(R5), F6
WFMADB V0, V2, V6, V2 WFMADB V0, V2, V6, V2
RISBGZ $57, $60, $3, R1, R3 RISBGZ $57, $60, $3, R1, R3
WORD $0xB3130022 //lcdbr %f2,%f2 LCDBR F2, F2
MOVD $·expm1tab<>+0(SB), R2 MOVD $·expm1tab<>+0(SB), R2
WORD $0x68432000 //ld %f4,0(%r3,%r2) WORD $0x68432000 //ld %f4,0(%r3,%r2)
FMADD F4, F0, F0 FMADD F4, F0, F0
SLD $48, R1, R2 SLD $48, R1, R2
WFMSDB V2, V0, V4, V0 WFMSDB V2, V0, V4, V0
LDGR R2, F4 LDGR R2, F4
WORD $0xB3130000 //lcdbr %f0,%f0 LCDBR F0, F0
FSUB F4, F6 FSUB F4, F6
WFMSDB V0, V4, V6, V0 WFMSDB V0, V4, V6, V0
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
@ -126,7 +126,7 @@ L16:
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
RET RET
L20: L20:
WORD $0xB3130020 //lcdbr %f2,%f0 LCDBR F0, F2
BR L2 BR L2
L6: L6:
MOVD $·expm1xaddexp<>+0(SB), R1 MOVD $·expm1xaddexp<>+0(SB), R1
@ -154,13 +154,13 @@ L6:
FMOVD 16(R5), F6 FMOVD 16(R5), F6
FMADD F4, F1, F6 FMADD F4, F1, F6
LGDR F5, R1 LGDR F5, R1
WORD $0xB3130066 //lcdbr %f6,%f6 LCDBR F6, F6
RISBGZ $57, $60, $3, R1, R3 RISBGZ $57, $60, $3, R1, R3
WORD $0x68432000 //ld %f4,0(%r3,%r2) WORD $0x68432000 //ld %f4,0(%r3,%r2)
FMADD F4, F1, F1 FMADD F4, F1, F1
MOVD $0x4086000000000000, R2 MOVD $0x4086000000000000, R2
FMSUB F1, F6, F4 FMSUB F1, F6, F4
WORD $0xB3130044 //lcdbr %f4,%f4 LCDBR F4, F4
WFCHDBS V2, V0, V0 WFCHDBS V2, V0, V0
BEQ L21 BEQ L21
ADDW $0xF000, R1 ADDW $0xF000, R1

4
src/math/log1p_s390x.s
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@ -114,7 +114,7 @@ TEXT ·log1pAsm(SB), NOSPLIT, $0-16
MOVD $·log1pxzero<>+0(SB), R1 MOVD $·log1pxzero<>+0(SB), R1
FMOVD 0(R1), F2 FMOVD 0(R1), F2
BVS LEXITTAGlog1p BVS LEXITTAGlog1p
WORD $0xB3130044 // lcdbr %f4,%f4 LCDBR F4, F4
WFCEDBS V2, V4, V6 WFCEDBS V2, V4, V6
BEQ L9 BEQ L9
WFCHDBS V4, V2, V2 WFCHDBS V4, V2, V2
@ -129,7 +129,7 @@ L8:
FSUB F4, F3 FSUB F4, F3
FMADD F2, F4, F1 FMADD F2, F4, F1
MOVD $·log1pc4<>+0(SB), R2 MOVD $·log1pc4<>+0(SB), R2
WORD $0xB3130041 // lcdbr %f4,%f1 LCDBR F1, F4
FMOVD 0(R2), F7 FMOVD 0(R2), F7
FSUB F3, F0 FSUB F3, F0
MOVD $·log1pc3<>+0(SB), R2 MOVD $·log1pc3<>+0(SB), R2

2
src/math/log_s390x.s
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@ -142,7 +142,7 @@ L2:
BYTE $0x10 BYTE $0x10
BYTE $0x1F BYTE $0x1F
MOVD ·logxl2<>+0(SB), R1 MOVD ·logxl2<>+0(SB), R1
WORD $0xB3130001 //lcdbr %f0,%f1 LCDBR F1, F0
LDGR R1, F4 LDGR R1, F4
WFMADB V0, V4, V2, V0 WFMADB V0, V4, V2, V0
L1: L1:

6
src/math/pow_s390x.s
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@ -492,10 +492,10 @@ L9:
FMOVD F2, F1 FMOVD F2, F1
BR L1 BR L1
L46: L46:
WORD $0xB3130040 //lcdbr %f4,%f0 LCDBR F0, F4
BR L3 BR L3
L44: L44:
WORD $0xB3130030 //lcdbr %f3,%f0 LCDBR F0, F3
BR L7 BR L7
L35: L35:
FMOVD F0, F1 FMOVD F0, F1
@ -590,7 +590,7 @@ L32:
FMOVD 8(R9), F4 FMOVD 8(R9), F4
BR L17 BR L17
L50: L50:
WORD $0xB3130042 //lcdbr %f4,%f2 LCDBR F2, F4
BR L14 BR L14
xIsOne: // Pow(1, y) = 1 for any y xIsOne: // Pow(1, y) = 1 for any y
yIsOne: // Pow(x, 1) = x for any x yIsOne: // Pow(x, 1) = x for any x

4
src/math/tan_s390x.s
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@ -87,7 +87,7 @@ L2:
WFDDB V0, V1, V0 WFDDB V0, V1, V0
WFMDB V2, V16, V2 WFMDB V2, V16, V2
WFMADB V2, V0, V4, V0 WFMADB V2, V0, V4, V0
WORD $0xB3130000 //lcdbr %f0,%f0 LCDBR F0, F0
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
RET RET
L12: L12:
@ -102,7 +102,7 @@ L11:
FMOVD F0, ret+8(FP) FMOVD F0, ret+8(FP)
RET RET
L10: L10:
WORD $0xB3130020 //lcdbr %f2,%f0 LCDBR F0, F2
BR L2 BR L2
L9: L9:
BR ·tan(SB) BR ·tan(SB)