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cmd/compile: redo flag constant ops for arm

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Encode the flag results in an auxint field instead of having
one opcode per flag state. This helps us handle the new *noov
branches in a unified manner.

This is only for arm, arm64 is in a subsequent CL.

We could extend to other architectures as well, athough it would
only be cleanup, no behavioral change.

Update #39505

Change-Id: Ia46cea596faad540d1496c5915ab1274571543f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/238077
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Keith Randall 2020-06-15 14:43:02 -07:00
parent 377c1536f5
commit 40ef1faabc
15 changed files with 841 additions and 1213 deletions
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1
src/cmd/compile/fmtmap_test.go
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@ -115,6 +115,7 @@ var knownFormats = map[string]string{
"cmd/compile/internal/ssa.Sym %v": "",
"cmd/compile/internal/ssa.ValAndOff %s": "",
"cmd/compile/internal/ssa.domain %v": "",
"cmd/compile/internal/ssa.flagConstant %s": "",
"cmd/compile/internal/ssa.posetNode %v": "",
"cmd/compile/internal/ssa.posetTestOp %v": "",
"cmd/compile/internal/ssa.rbrank %d": "",