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| author | Ayke van Laethem <[email protected]> | 2021-09-15 04:07:55 +0200 |
|---|---|---|
| committer | Ron Evans <[email protected]> | 2021-09-15 15:28:10 +0200 |
| commit | 37ee4bea40e6d0c4f14beb230aff8da2363aa0ab (patch) | |
| tree | f8fc1e1fa953db0d41ba25e42ab5b3f742573f79 | |
| parent | ca4f2510509fc6e3195e046a5198980a4ad5fe53 (diff) | |
| download | tinygo-37ee4bea40e6d0c4f14beb230aff8da2363aa0ab.tar.gz tinygo-37ee4bea40e6d0c4f14beb230aff8da2363aa0ab.zip | |
arm: switch to Thumb instruction set on ARM
This reduces binary size substantially, for two reasons:
- It switches to a much more architecture ARMv4 vs ARMv7.
- It switches to Thumb2, which is a lot denser than regular ARM.
Practically all modern and not-so-modern ARM chips support Thumb2, so
this seems like a safe change to me.
The size in numbers:
- Code size for testdata/stdlib.go is reduced by about 35%.
- Binary size for testdata/stdlib.go (when compiling with -no-debug to
strip debug information) is reduced by about 16%.
| -rw-r--r-- | compileopts/target.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/compileopts/target.go b/compileopts/target.go index 19951426b..a84896c9b 100644 --- a/compileopts/target.go +++ b/compileopts/target.go @@ -172,6 +172,7 @@ func LoadTarget(target string) (*TargetSpec, error) { "386": "i386", "amd64": "x86_64", "arm64": "aarch64", + "arm": "thumbv7", }[goarch] if llvmarch == "" { llvmarch = goarch |