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test/codegen: add shift tests for RISCV64

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Add tests for shift by constant, masked shifts and bounded shifts. While here,
sort tests by architecture and keep order of tests consistent (lsh, rshU, rsh).

Change-Id: I512d64196f34df9cb2884e8c0f6adcf9dd88b0fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/351289
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Michael Munday <mike.munday@lowrisc.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Joel Sing 2021-09-22 02:46:00 +10:00
parent 242d02dd5e
commit d413908320
1 changed files with 92 additions and 28 deletions
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120
test/codegen/shift.go
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@ -6,91 +6,152 @@
package codegen
// ------------------ //
// constant shifts //
// ------------------ //
func lshConst64x64(v int64) int64 {
// riscv64:"SLL","AND","SLTIU"
return v << uint64(33)
}
func rshConst64Ux64(v uint64) uint64 {
// riscv64:"SRL","AND","SLTIU"
return v >> uint64(33)
}
func rshConst64x64(v int64) int64 {
// riscv64:"SRA","OR","SLTIU"
return v >> uint64(33)
}
func lshConst32x64(v int32) int32 {
// riscv64:"SLL","AND","SLTIU"
return v << uint64(29)
}
func rshConst32Ux64(v uint32) uint32 {
// riscv64:"SRL","AND","SLTIU"
return v >> uint64(29)
}
func rshConst32x64(v int32) int32 {
// riscv64:"SRA","OR","SLTIU"
return v >> uint64(29)
}
func lshConst64x32(v int64) int64 {
// riscv64:"SLL","AND","SLTIU"
return v << uint32(33)
}
func rshConst64Ux32(v uint64) uint64 {
// riscv64:"SRL","AND","SLTIU"
return v >> uint32(33)
}
func rshConst64x32(v int64) int64 {
// riscv64:"SRA","OR","SLTIU"
return v >> uint32(33)
}
// ------------------ //
// masked shifts //
// ------------------ //
func lshMask64x64(v int64, s uint64) int64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// riscv64:"SLL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v << (s & 63)
}
func rshMask64Ux64(v uint64, s uint64) uint64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// riscv64:"SRL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> (s & 63)
}
func rshMask64x64(v int64, s uint64) int64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-ORN",-"ISEL"
// riscv64:"SRA","OR","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> (s & 63)
}
func lshMask32x64(v int32, s uint64) int32 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ISEL",-"ORN"
// ppc64:"ISEL",-"ORN"
// ppc64le:"ISEL",-"ORN"
// riscv64:"SLL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v << (s & 63)
}
func rshMask32Ux64(v uint32, s uint64) uint32 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ISEL",-"ORN"
// ppc64:"ISEL",-"ORN"
// ppc64le:"ISEL",-"ORN"
// riscv64:"SRL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> (s & 63)
}
func rshMask32x64(v int32, s uint64) int32 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ISEL",-"ORN"
// ppc64:"ISEL",-"ORN"
// ppc64le:"ISEL",-"ORN"
// riscv64:"SRA","OR","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> (s & 63)
}
func lshMask64x32(v int64, s uint32) int64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN"
// ppc64:"ANDCC",-"ORN"
// ppc64le:"ANDCC",-"ORN"
// riscv64:"SLL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v << (s & 63)
}
func rshMask64Ux32(v uint64, s uint32) uint64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN"
// ppc64:"ANDCC",-"ORN"
// ppc64le:"ANDCC",-"ORN"
// riscv64:"SRL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> (s & 63)
}
func rshMask64x32(v int64, s uint32) int64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// riscv64:"SRA","OR","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> (s & 63)
}
func lshMask64x32Ext(v int64, s int32) int64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// riscv64:"SLL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v << uint(s&63)
}
func rshMask64Ux32Ext(v uint64, s int32) uint64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// riscv64:"SRL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> uint(s&63)
}
func rshMask64x32Ext(v int64, s int32) int64 {
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// ppc64:"ANDCC",-"ORN",-"ISEL"
// ppc64le:"ANDCC",-"ORN",-"ISEL"
// riscv64:"SRA","OR","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
return v >> uint(s&63)
}
@ -126,17 +187,19 @@ func lshSignedMasked(v8 int8, v16 int16, v32 int32, v64 int64, x int) {
// bounded shifts //
// ------------------ //
func rshGuarded64(v int64, s uint) int64 {
func lshGuarded64(v int64, s uint) int64 {
if s < 64 {
// riscv64:"SLL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// wasm:-"Select",-".*LtU"
return v >> s
return v << s
}
panic("shift too large")
}
func rshGuarded64U(v uint64, s uint) uint64 {
if s < 64 {
// riscv64:"SRL","AND","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// wasm:-"Select",-".*LtU"
return v >> s
@ -144,11 +207,12 @@ func rshGuarded64U(v uint64, s uint) uint64 {
panic("shift too large")
}
func lshGuarded64(v int64, s uint) int64 {
func rshGuarded64(v int64, s uint) int64 {
if s < 64 {
// riscv64:"SRA","OR","SLTIU"
// s390x:-"RISBGZ",-"AND",-"LOCGR"
// wasm:-"Select",-".*LtU"
return v << s
return v >> s
}
panic("shift too large")
}