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rustc_target: Add some more target spec sanity checking #100537

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merged 4 commits into from
Sep 1, 2022

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@rustbot rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Aug 14, 2022
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r? @oli-obk

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⚠️ Warning ⚠️

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 14, 2022
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@rustbot ready

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oli-obk commented Aug 29, 2022

@bors r+ rollup=never (for bisectability)

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bors commented Aug 29, 2022

📌 Commit f7eb7ef has been approved by oli-obk

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 29, 2022
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bors commented Sep 1, 2022

⌛ Testing commit f7eb7ef with merge aa857eb...

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bors commented Sep 1, 2022

☀️ Test successful - checks-actions
Approved by: oli-obk
Pushing aa857eb to master...

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Finished benchmarking commit (aa857eb): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean1 range count2
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
4.5% [3.1%, 5.9%] 2
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-4.3% [-4.3%, -4.3%] 1
All ❌✅ (primary) - - 0

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean1 range count2
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
2.1% [2.1%, 2.1%] 1
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) - - 0

Footnotes

  1. the arithmetic mean of the percent change 2

  2. number of relevant changes 2

nicholasbishop added a commit to nicholasbishop/rust that referenced this pull request Sep 9, 2022
In rust-lang#100537, the relocation model
for UEFI targets was changed from PIC (the default value) to
static. There was some dicussion of this change here:
rust-lang#100537 (comment)

It turns out that this can cause compilation to fail as described in
rust-lang#101377, so switch back to PIC.

Fixes rust-lang#101377
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Sep 10, 2022
…static-reloc, r=petrochenkov

Use RelocModel::Pic for UEFI targets

In rust-lang#100537, the relocation model for UEFI targets was changed from PIC (the default value) to
static. There was some dicussion of this change here: rust-lang#100537 (comment)

It turns out that this can cause compilation to fail as described in rust-lang#101377, so switch back to PIC.

Fixes rust-lang#101377
Comment on lines +151 to +153
if self.relocation_model == RelocModel::Pic {
assert!(self.dynamic_linking || self.position_independent_executables);
}
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This requirement is a bit odd since our default values for target options violate it -- the default relocation model is PIC, but the default for dynamic_linking and position_independent_executables is false. This is causing some trouble in #133409.

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