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authorVishwanatha HD <Vishwanatha.HD@ibm.com>2025-02-10 10:50:59 +0000
committerCherry Mui <cherryyz@google.com>2025-03-24 07:05:55 -0700
commit4ae6ab2bdfe3ebe8340d0d49fd2bb73f1a3e19ff (patch)
tree50778b99c5119197fd89722e7226a350013e4de7 /src
parent3ada42ffedf61343cc8a7cd7d6293bd646ecf3a6 (diff)
downloadgo-4ae6ab2bdfe3ebe8340d0d49fd2bb73f1a3e19ff.tar.xz
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>
Diffstat (limited to 'src')
-rw-r--r--src/cmd/asm/internal/asm/testdata/s390x.s5
-rw-r--r--src/cmd/internal/obj/s390x/a.out.go1
-rw-r--r--src/cmd/internal/obj/s390x/anames.go1
-rw-r--r--src/cmd/internal/obj/s390x/asmz.go3
-rw-r--r--src/math/acos_s390x.s4
-rw-r--r--src/math/asin_s390x.s4
-rw-r--r--src/math/asinh_s390x.s6
-rw-r--r--src/math/atan2_s390x.s6
-rw-r--r--src/math/erfc_s390x.s4
-rw-r--r--src/math/exp_s390x.s2
-rw-r--r--src/math/expm1_s390x.s10
-rw-r--r--src/math/log1p_s390x.s4
-rw-r--r--src/math/log_s390x.s2
-rw-r--r--src/math/pow_s390x.s6
-rw-r--r--src/math/tan_s390x.s4
15 files changed, 34 insertions, 28 deletions
diff --git a/src/cmd/asm/internal/asm/testdata/s390x.s b/src/cmd/asm/internal/asm/testdata/s390x.s
index db2ee199cf..95a8c50dab 100644
--- a/src/cmd/asm/internal/asm/testdata/s390x.s
+++ b/src/cmd/asm/internal/asm/testdata/s390x.s
@@ -401,6 +401,7 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
FMADDS F1, F2, F3 // b30e3012
FMSUB F4, F5, F5 // b31f5045
FMSUBS F6, F6, F7 // b30f7066
+ LCDBR F0, F2 // b3130020
LPDFR F1, F2 // b3700021
LNDFR F3, F4 // b3710043
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
KIMD R0, R4 // b93e0004
KDSA R0, R8 // b93a0008
- KMA R2, R6, R4 // b9296024
- KMCTR R2, R6, R4 // b92d6024
+ KMA R2, R6, R4 // b9296024
+ KMCTR R2, R6, R4 // b92d6024
// vector add and sub instructions
VAB V3, V4, V4 // e743400000f3
diff --git a/src/cmd/internal/obj/s390x/a.out.go b/src/cmd/internal/obj/s390x/a.out.go
index 08ade51924..3eed4624b1 100644
--- a/src/cmd/internal/obj/s390x/a.out.go
+++ b/src/cmd/internal/obj/s390x/a.out.go
@@ -329,6 +329,7 @@ const (
AFNABS
AFNEG
AFNEGS
+ ALCDBR
ALEDBR
ALDEBR
ALPDFR
diff --git a/src/cmd/internal/obj/s390x/anames.go b/src/cmd/internal/obj/s390x/anames.go
index fa23984332..ae86d2092b 100644
--- a/src/cmd/internal/obj/s390x/anames.go
+++ b/src/cmd/internal/obj/s390x/anames.go
@@ -96,6 +96,7 @@ var Anames = []string{
"FNABS",
"FNEG",
"FNEGS",
+ "LCDBR",
"LEDBR",
"LDEBR",
"LPDFR",
diff --git a/src/cmd/internal/obj/s390x/asmz.go b/src/cmd/internal/obj/s390x/asmz.go
index 98dbc7c834..6511549eeb 100644
--- a/src/cmd/internal/obj/s390x/asmz.go
+++ b/src/cmd/internal/obj/s390x/asmz.go
@@ -969,6 +969,7 @@ func buildop(ctxt *obj.Link) {
opset(ALNDFR, r)
opset(AFNEG, r)
opset(AFNEGS, r)
+ opset(ALCDBR, r)
opset(ALEDBR, r)
opset(ALDEBR, r)
opset(AFSQRT, r)
@@ -3373,6 +3374,8 @@ func (c *ctxtz) asmout(p *obj.Prog, asm *[]byte) {
opcode = op_LCDFR
case AFNEGS:
opcode = op_LCEBR
+ case ALCDBR:
+ opcode = op_LCDBR
case ALEDBR:
opcode = op_LEDBR
case ALDEBR:
diff --git a/src/math/acos_s390x.s b/src/math/acos_s390x.s
index d2288b8cd8..4431b99e1c 100644
--- a/src/math/acos_s390x.s
+++ b/src/math/acos_s390x.s
@@ -121,7 +121,7 @@ L4:
L12:
FMOVD 24(R9), F0
FMADD F10, F10, F0
- WORD $0xB3130080 //lcdbr %f8,%f0
+ LCDBR F0, F8
WORD $0xED009008 //cdb %f0,.L37-.L13(%r9)
BYTE $0x00
BYTE $0x19
@@ -129,7 +129,7 @@ L12:
L5:
MOVW R12, R4
CMPBLE R4, $0, L7
- WORD $0xB31300AA //lcdbr %f10,%f10
+ LCDBR F10, F10
FMOVD $0, F1
BR L3
L9:
diff --git a/src/math/asin_s390x.s b/src/math/asin_s390x.s
index dc54d053f1..e5887c9bea 100644
--- a/src/math/asin_s390x.s
+++ b/src/math/asin_s390x.s
@@ -139,7 +139,7 @@ L4:
L14:
FMOVD 200(R9), F0
FMADD F8, F8, F0
- WORD $0xB31300A0 //lcdbr %f10,%f0
+ LCDBR F0, F10
WORD $0xED009020 //cdb %f0,.L39-.L15(%r9)
BYTE $0x00
BYTE $0x19
@@ -147,7 +147,7 @@ L14:
L6:
MOVW R7, R6
CMPBLE R6, $0, L8
- WORD $0xB3130088 //lcdbr %f8,%f8
+ LCDBR F8, F8
FMOVD 24(R9), F1
BR L4
L10:
diff --git a/src/math/asinh_s390x.s b/src/math/asinh_s390x.s
index 1bcf2954c4..94081d3b15 100644
--- a/src/math/asinh_s390x.s
+++ b/src/math/asinh_s390x.s
@@ -174,7 +174,7 @@ L6:
MOVD R12, R6
CMPBGT R6, $0, L1
- WORD $0xB3130000 //lcdbr %f0,%f0
+ LCDBR F0, F0
FMOVD F0, ret+8(FP)
RET
L16:
@@ -206,8 +206,8 @@ L16:
FMOVD F0, ret+8(FP)
RET
L17:
- WORD $0xB31300A0 //lcdbr %f10,%f0
+ LCDBR F0, F10
BR L4
L15:
- WORD $0xB31300A0 //lcdbr %f10,%f0
+ LCDBR F0, F10
BR L9
diff --git a/src/math/atan2_s390x.s b/src/math/atan2_s390x.s
index 587b89e9b5..13ff31977b 100644
--- a/src/math/atan2_s390x.s
+++ b/src/math/atan2_s390x.s
@@ -244,16 +244,16 @@ L17:
WFDDB V0, V2, V4
BYTE $0x18 //lr %r2,%r5
BYTE $0x25
- WORD $0xB3130034 //lcdbr %f3,%f4
+ LCDBR F4, F3
BR L3
L23:
- WORD $0xB3130062 //lcdbr %f6,%f2
+ LCDBR F2, F6
BR L4
L22:
VLR V20, V0
BR L9
L21:
- WORD $0xB3130022 //lcdbr %f2,%f2
+ LCDBR F2, F2
BR L8
L24:
VLR V20, V4
diff --git a/src/math/erfc_s390x.s b/src/math/erfc_s390x.s
index 7e9d469cc6..e03a7749ff 100644
--- a/src/math/erfc_s390x.s
+++ b/src/math/erfc_s390x.s
@@ -355,7 +355,7 @@ L10:
WFMADB V0, V5, V3, V5
BR L11
L35:
- WORD $0xB3130010 //lcdbr %f1,%f0
+ LCDBR F0, F1
BR L9
L36:
FMOVD 304(R9), F3
@@ -436,7 +436,7 @@ L30:
L20:
FMOVD 88(R9), F0
WFMADB V7, V2, V0, V2
- WORD $0xB3130022 //lcdbr %f2,%f2
+ LCDBR F2, F2
FMOVD F2, ret+8(FP)
RET
L13:
diff --git a/src/math/exp_s390x.s b/src/math/exp_s390x.s
index e0ec823073..baf0e985a1 100644
--- a/src/math/exp_s390x.s
+++ b/src/math/exp_s390x.s
@@ -116,7 +116,7 @@ L16:
FMOVD F0, ret+8(FP)
RET
L20:
- WORD $0xB3130020 //lcdbr %f2,%f0
+ LCDBR F0, F2
BR L2
L6:
MOVD $·expxaddexp<>+0(SB), R1
diff --git a/src/math/expm1_s390x.s b/src/math/expm1_s390x.s
index 16c861bb18..c193edc7cb 100644
--- a/src/math/expm1_s390x.s
+++ b/src/math/expm1_s390x.s
@@ -100,14 +100,14 @@ L2:
FMOVD 16(R5), F6
WFMADB V0, V2, V6, V2
RISBGZ $57, $60, $3, R1, R3
- WORD $0xB3130022 //lcdbr %f2,%f2
+ LCDBR F2, F2
MOVD $·expm1tab<>+0(SB), R2
WORD $0x68432000 //ld %f4,0(%r3,%r2)
FMADD F4, F0, F0
SLD $48, R1, R2
WFMSDB V2, V0, V4, V0
LDGR R2, F4
- WORD $0xB3130000 //lcdbr %f0,%f0
+ LCDBR F0, F0
FSUB F4, F6
WFMSDB V0, V4, V6, V0
FMOVD F0, ret+8(FP)
@@ -126,7 +126,7 @@ L16:
FMOVD F0, ret+8(FP)
RET
L20:
- WORD $0xB3130020 //lcdbr %f2,%f0
+ LCDBR F0, F2
BR L2
L6:
MOVD $·expm1xaddexp<>+0(SB), R1
@@ -154,13 +154,13 @@ L6:
FMOVD 16(R5), F6
FMADD F4, F1, F6
LGDR F5, R1
- WORD $0xB3130066 //lcdbr %f6,%f6
+ LCDBR F6, F6
RISBGZ $57, $60, $3, R1, R3
WORD $0x68432000 //ld %f4,0(%r3,%r2)
FMADD F4, F1, F1
MOVD $0x4086000000000000, R2
FMSUB F1, F6, F4
- WORD $0xB3130044 //lcdbr %f4,%f4
+ LCDBR F4, F4
WFCHDBS V2, V0, V0
BEQ L21
ADDW $0xF000, R1
diff --git a/src/math/log1p_s390x.s b/src/math/log1p_s390x.s
index 00eb374996..98fe82c9c3 100644
--- a/src/math/log1p_s390x.s
+++ b/src/math/log1p_s390x.s
@@ -114,7 +114,7 @@ TEXT ·log1pAsm(SB), NOSPLIT, $0-16
MOVD $·log1pxzero<>+0(SB), R1
FMOVD 0(R1), F2
BVS LEXITTAGlog1p
- WORD $0xB3130044 // lcdbr %f4,%f4
+ LCDBR F4, F4
WFCEDBS V2, V4, V6
BEQ L9
WFCHDBS V4, V2, V2
@@ -129,7 +129,7 @@ L8:
FSUB F4, F3
FMADD F2, F4, F1
MOVD $·log1pc4<>+0(SB), R2
- WORD $0xB3130041 // lcdbr %f4,%f1
+ LCDBR F1, F4
FMOVD 0(R2), F7
FSUB F3, F0
MOVD $·log1pc3<>+0(SB), R2
diff --git a/src/math/log_s390x.s b/src/math/log_s390x.s
index 4b514f3dd4..215d7a03a7 100644
--- a/src/math/log_s390x.s
+++ b/src/math/log_s390x.s
@@ -142,7 +142,7 @@ L2:
BYTE $0x10
BYTE $0x1F
MOVD ·logxl2<>+0(SB), R1
- WORD $0xB3130001 //lcdbr %f0,%f1
+ LCDBR F1, F0
LDGR R1, F4
WFMADB V0, V4, V2, V0
L1:
diff --git a/src/math/pow_s390x.s b/src/math/pow_s390x.s
index c8758fc5f8..97cd48d96e 100644
--- a/src/math/pow_s390x.s
+++ b/src/math/pow_s390x.s
@@ -492,10 +492,10 @@ L9:
FMOVD F2, F1
BR L1
L46:
- WORD $0xB3130040 //lcdbr %f4,%f0
+ LCDBR F0, F4
BR L3
L44:
- WORD $0xB3130030 //lcdbr %f3,%f0
+ LCDBR F0, F3
BR L7
L35:
FMOVD F0, F1
@@ -590,7 +590,7 @@ L32:
FMOVD 8(R9), F4
BR L17
L50:
- WORD $0xB3130042 //lcdbr %f4,%f2
+ LCDBR F2, F4
BR L14
xIsOne: // Pow(1, y) = 1 for any y
yIsOne: // Pow(x, 1) = x for any x
diff --git a/src/math/tan_s390x.s b/src/math/tan_s390x.s
index 6a4c449b0d..48cd2841e8 100644
--- a/src/math/tan_s390x.s
+++ b/src/math/tan_s390x.s
@@ -87,7 +87,7 @@ L2:
WFDDB V0, V1, V0
WFMDB V2, V16, V2
WFMADB V2, V0, V4, V0
- WORD $0xB3130000 //lcdbr %f0,%f0
+ LCDBR F0, F0
FMOVD F0, ret+8(FP)
RET
L12:
@@ -102,7 +102,7 @@ L11:
FMOVD F0, ret+8(FP)
RET
L10:
- WORD $0xB3130020 //lcdbr %f2,%f0
+ LCDBR F0, F2
BR L2
L9:
BR ·tan(SB)
generated by cgit v1.3 (git 2.53.0) at 2026-04-15 20:19:32 +0000