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| author | kennytm <kennytm@gmail.com> | 2018-01-31 16:36:17 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-01-31 16:36:17 +0800 |
| commit | 3d8279dec772306afc2f168b074e3a53eccec80a (patch) | |
| tree | c6609e83f05b4e8eb56f9eaf85c635804d94c922 | |
| parent | fde67b6ae3baa7063224d5efd7fccbfbdfca383b (diff) | |
| parent | 1e380cbfdd96365ef0eb6dfec341e85b68fa64b5 (diff) | |
| download | rust-3d8279dec772306afc2f168b074e3a53eccec80a.tar.gz rust-3d8279dec772306afc2f168b074e3a53eccec80a.zip | |
Rollup merge of #47890 - pftbest:no_trap, r=alexcrichton
[MSP430] Don't enable trap_unreachable option by default on msp. Since MSP430 doesn't meaningfully support faulting on illegal instructions, LLVM generates a call to abort() function instead of a trap instruction. Such calls are 4 bytes long, and that is too much overhead for such small target. r? @alexcrichton
| -rw-r--r-- | src/librustc_back/target/msp430_none_elf.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/librustc_back/target/msp430_none_elf.rs b/src/librustc_back/target/msp430_none_elf.rs index 509a7cf5e03..966df897f01 100644 --- a/src/librustc_back/target/msp430_none_elf.rs +++ b/src/librustc_back/target/msp430_none_elf.rs @@ -53,6 +53,12 @@ pub fn target() -> TargetResult { // don't want to invoke that many gcc instances. default_codegen_units: Some(1), + // Since MSP430 doesn't meaningfully support faulting on illegal + // instructions, LLVM generates a call to abort() function instead + // of a trap instruction. Such calls are 4 bytes long, and that is + // too much overhead for such small target. + trap_unreachable: false, + .. Default::default( ) } }) |