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all: remove the nacl port (part 2, amd64p32 + toolchain)

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This is part two if the nacl removal. Part 1 was CL 199499.

This CL removes amd64p32 support, which might be useful in the future
if we implement the x32 ABI. It also removes the nacl bits in the
toolchain, and some remaining nacl bits.

Updates #30439

Change-Id: I2475d5bb066d1b474e00e40d95b520e7c2e286e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/200077
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Brad Fitzpatrick 2019-10-09 16:22:47 +00:00
parent 19a7490e56
commit 07b4abd62e
70 changed files with 387 additions and 4072 deletions
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9
src/cmd/compile/internal/ssa/regalloc.go
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@ -625,15 +625,6 @@ func (s *regAllocState) init(f *Func) {
s.f.fe.Fatalf(src.NoXPos, "arch %s not implemented", s.f.Config.arch)
}
}
if s.f.Config.nacl {
switch s.f.Config.arch {
case "arm":
s.allocatable &^= 1 << 9 // R9 is "thread pointer" on nacl/arm
case "amd64p32":
s.allocatable &^= 1 << 5 // BP - reserved for nacl
s.allocatable &^= 1 << 15 // R15 - reserved for nacl
}
}
if s.f.Config.use387 {
s.allocatable &^= 1 << 15 // X7 disallowed (one 387 register is used as scratch space during SSE->387 generation in ../x86/387.go)
}