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codegen: check for PPC64 ISEL in condmove tests

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ISEL is roughly equivalent to CMOV on PPC64. Verify ISEL generation
in all reasonable cases.

Note "ISEL test x y z" is the same as "ISEL !test y x z". test is
always one of LT (0), GT (1), EQ (2), SO (3). Sometimes x and y are
swapped if GE/LE/NE is desired.

Change-Id: Ie1bf029224064e004d855099731fe5e8d05aa990
Reviewed-on: https://go-review.googlesource.com/c/go/+/445215
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Paul E. Murphy 2022-10-24 17:12:57 -05:00 committed by Paul Murphy
parent 8ec1c9e285
commit 390abbbbf1
1 changed files with 23 additions and 1 deletions
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24
test/codegen/condmove.go
View file

@ -13,6 +13,8 @@ func cmovint(c int) int {
}
// amd64:"CMOVQLT"
// arm64:"CSEL\tLT"
// ppc64:"ISEL\t[$]0"
// ppc64le:"ISEL\t[$]0"
// wasm:"Select"
return x
}
@ -23,6 +25,8 @@ func cmovchan(x, y chan int) chan int {
}
// amd64:"CMOVQNE"
// arm64:"CSEL\tNE"
// ppc64:"ISEL\t[$]2"
// ppc64le:"ISEL\t[$]2"
// wasm:"Select"
return x
}
@ -33,6 +37,8 @@ func cmovuintptr(x, y uintptr) uintptr {
}
// amd64:"CMOVQ(HI|CS)"
// arm64:"CSNEG\tLS"
// ppc64:"ISEL\t[$]1"
// ppc64le:"ISEL\t[$]1"
// wasm:"Select"
return x
}
@ -43,6 +49,8 @@ func cmov32bit(x, y uint32) uint32 {
}
// amd64:"CMOVL(HI|CS)"
// arm64:"CSNEG\t(LS|HS)"
// ppc64:"ISEL\t[$]1"
// ppc64le:"ISEL\t[$]1"
// wasm:"Select"
return x
}
@ -53,6 +61,8 @@ func cmov16bit(x, y uint16) uint16 {
}
// amd64:"CMOVW(HI|CS)"
// arm64:"CSNEG\t(LS|HS)"
// ppc64:"ISEL\t[$]0"
// ppc64le:"ISEL\t[$]0"
// wasm:"Select"
return x
}
@ -66,6 +76,8 @@ func cmovfloateq(x, y float64) int {
}
// amd64:"CMOVQNE","CMOVQPC"
// arm64:"CSEL\tEQ"
// ppc64:"ISEL\t[$]2"
// ppc64le:"ISEL\t[$]2"
// wasm:"Select"
return a
}
@ -77,6 +89,8 @@ func cmovfloatne(x, y float64) int {
}
// amd64:"CMOVQNE","CMOVQPS"
// arm64:"CSEL\tNE"
// ppc64:"ISEL\t[$]2"
// ppc64le:"ISEL\t[$]2"
// wasm:"Select"
return a
}
@ -103,6 +117,8 @@ func cmovfloatint2(x, y float64) float64 {
}
// amd64:"CMOVQHI"
// arm64:"CSEL\tMI"
// ppc64:"ISEL\t[$]0"
// ppc64le:"ISEL\t[$]0"
// wasm:"Select"
r = r - ldexp(y, rexp-yexp)
}
@ -117,6 +133,8 @@ func cmovloaded(x [4]int, y int) int {
}
// amd64:"CMOVQNE"
// arm64:"CSEL\tNE"
// ppc64:"ISEL\t[$]2"
// ppc64le:"ISEL\t[$]2"
// wasm:"Select"
return y
}
@ -128,11 +146,13 @@ func cmovuintptr2(x, y uintptr) uintptr {
}
// amd64:"CMOVQEQ"
// arm64:"CSEL\tEQ"
// ppc64:"ISEL\t[$]2"
// ppc64le:"ISEL\t[$]2"
// wasm:"Select"
return a
}
// Floating point CMOVs are not supported by amd64/arm64
// Floating point CMOVs are not supported by amd64/arm64/ppc64/ppc64le
func cmovfloatmove(x, y int) float64 {
a := 1.0
if x <= y {
@ -140,6 +160,8 @@ func cmovfloatmove(x, y int) float64 {
}
// amd64:-"CMOV"
// arm64:-"CSEL"
// ppc64:-"ISEL"
// ppc64le:-"ISEL"
// wasm:-"Select"
return a
}