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| author | Cherry Zhang <cherryyz@google.com> | 2021-03-17 19:15:38 -0400 |
|---|---|---|
| committer | Cherry Zhang <cherryyz@google.com> | 2021-03-19 23:21:21 +0000 |
| commit | 6ae3b70ef255cd7317764a12b7230f293683f2c5 (patch) | |
| tree | ba2d6362e17980c0123f9e1b37c3c3a54e4d4214 /src/cmd/compile/internal/ssa/gen | |
| parent | 9f2a71b6e7b418182dd0467e7d054ccf8130c026 (diff) | |
| download | go-6ae3b70ef255cd7317764a12b7230f293683f2c5.tar.gz go-6ae3b70ef255cd7317764a12b7230f293683f2c5.zip | |
cmd/compile: add clobberdeadreg mode
When -clobberdeadreg flag is set, the compiler inserts code that
clobbers integer registers at call sites. This may be helpful for
debugging register ABI.
Only implemented on AMD64 for now.
Change-Id: Ia203d3f891c30fd95d0103489056fe01d63a2899
Reviewed-on: https://go-review.googlesource.com/c/go/+/302809
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src/cmd/compile/internal/ssa/gen')
| -rw-r--r-- | src/cmd/compile/internal/ssa/gen/genericOps.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/gen/genericOps.go b/src/cmd/compile/internal/ssa/gen/genericOps.go index 85c58ef74c..c38d22e07f 100644 --- a/src/cmd/compile/internal/ssa/gen/genericOps.go +++ b/src/cmd/compile/internal/ssa/gen/genericOps.go @@ -613,6 +613,7 @@ var genericOps = []opData{ // Clobber experiment op {name: "Clobber", argLength: 0, typ: "Void", aux: "SymOff", symEffect: "None"}, // write an invalid pointer value to the given pointer slot of a stack variable + {name: "ClobberReg", argLength: 0, typ: "Void"}, // clobber a register } // kind controls successors implicit exit |