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Save bitcode before LTO when -C save-temps is given

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This commit is contained in:
Seo Sanghyeon 2015-09-22 00:33:17 +09:00
parent a33e48771e
commit 9ba5db6690
2 changed files with 14 additions and 2 deletions
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13
src/librustc_trans/back/lto.rs
View File

@ -15,6 +15,7 @@ use llvm;
use llvm::archive_ro::ArchiveRO;
use llvm::{ModuleRef, TargetMachineRef, True, False};
use rustc::util::common::time;
use rustc::util::common::path2cstr;
use back::write::{ModuleConfig, with_llvm_pmb};
use libc;
@ -24,7 +25,9 @@ use std::ffi::CString;
pub fn run(sess: &session::Session, llmod: ModuleRef,
tm: TargetMachineRef, reachable: &[String],
config: &ModuleConfig) {
config: &ModuleConfig,
name_extra: &str,
output_names: &config::OutputFilenames) {
if sess.opts.cg.prefer_dynamic {
sess.err("cannot prefer dynamic linking when performing LTO");
sess.note("only 'staticlib' and 'bin' outputs are supported with LTO");
@ -124,6 +127,14 @@ pub fn run(sess: &session::Session, llmod: ModuleRef,
}
}
if sess.opts.cg.save_temps {
let path = output_names.with_extension(&format!("{}.no-opt.lto.bc", name_extra));
let cstr = path2cstr(&path);
unsafe {
llvm::LLVMWriteBitcodeToFile(llmod, cstr.as_ptr());
}
}
// Now we have one massive module inside of llmod. Time to run the
// LTO-specific optimization passes that LLVM provides.
//

3
src/librustc_trans/back/write.rs
View File

@ -496,7 +496,8 @@ unsafe fn optimize_and_codegen(cgcx: &CodegenContext,
match cgcx.lto_ctxt {
Some((sess, reachable)) if sess.lto() => {
time(sess.time_passes(), "all lto passes", ||
lto::run(sess, llmod, tm, reachable, &config));
lto::run(sess, llmod, tm, reachable, &config,
&name_extra, &output_names));
if config.emit_lto_bc {
let name = format!("{}.lto.bc", name_extra);