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Revert "cmd/compile: don't allow NaNs in floating-point constant ops"

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This reverts CL 213477.

Reason for revert: tests are failing on linux-mips*-rtrk builders.

Change-Id: I8168f7450890233f1bd7e53930b73693c26d4dc0
Reviewed-on: https://go-review.googlesource.com/c/go/+/220897
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Bryan C. Mills 2020-02-25 14:36:38 +00:00
parent 58ba0f9dcd
commit a9f1ea4a83
11 changed files with 26 additions and 200 deletions
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6
src/cmd/compile/internal/ssa/rewrite.go
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@ -487,17 +487,11 @@ func DivisionNeedsFixUp(v *Value) bool {
// auxFrom64F encodes a float64 value so it can be stored in an AuxInt.
func auxFrom64F(f float64) int64 {
if f != f {
panic("can't encode a NaN in AuxInt field")
}
return int64(math.Float64bits(f))
}
// auxFrom32F encodes a float32 value so it can be stored in an AuxInt.
func auxFrom32F(f float32) int64 {
if f != f {
panic("can't encode a NaN in AuxInt field")
}
return int64(math.Float64bits(extend32Fto64F(f)))
}