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authorbors <bors@rust-lang.org>2023-08-07 21:37:42 +0000
committerbors <bors@rust-lang.org>2023-08-07 21:37:42 +0000
commit443c3161dd04f4c1b656a626f9079921bee9c326 (patch)
treeb3711b41ca4251bb1fd4d28bbd5c27ba3c8df691 /compiler/rustc_codegen_llvm/src
parent03a119b0b0e310d22d94399b24ed030056050f13 (diff)
parent78678336527cdbabaa41e5e92e6645ed712b4160 (diff)
downloadrust-443c3161dd04f4c1b656a626f9079921bee9c326.tar.gz
rust-443c3161dd04f4c1b656a626f9079921bee9c326.zip
Auto merge of #114048 - nikic:llvm-17, r=cuviper
Update to LLVM 17

Expected LLVM 17.0.0 release date: Sep 5th
Rust 1.73 release date: Oct 5th

Compatibility changes in this PR:
 - Drop LLVM_RUSTLLVM check for target-cpu table, which no longer requires a patch with LLVM 17.
 - Update powerpc data layouts, which now include function alignment information. As usual, downgrade for older LLVM versions.
 - Adjust the stack-protector.rs test so that the stack smashing does not get optimized away.
 - Adjust path of crtbegin.c and crtend.c in compiler-rt.
 - Updated dist-riscv64-linux to use binutils 2.36 in order to recognize the zicsr feature, which is no longer part of the base ISA.
 - Fixed symlink for asm include directory on dist-various-2. We should use `/usr/include/x86_64-linux-gnu/asm` for the host, rather than `/usr/include/asm-generic`.

Upstream patches:
 - [x] https://reviews.llvm.org/D156525 (backported)

Perf run: https://perf.rust-lang.org/compare.html?start=f239bb6bea94d16d902c36d72b5cabdddefb3cab&end=8030d71a95a3ea79f5fc95232c32f9b78effb92d&stat=instructions:u

Fixes #109671.

Successful: dist-x86_64-linux, dist-aarch64-linux, dist-s390x-linux, dist-powerpc-linux, armhf-gnu, wasm32
Diffstat (limited to 'compiler/rustc_codegen_llvm/src')
-rw-r--r--compiler/rustc_codegen_llvm/src/context.rs11
1 files changed, 11 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/context.rs b/compiler/rustc_codegen_llvm/src/context.rs
index 2d23be6cd52..b4f7e20e05d 100644
--- a/compiler/rustc_codegen_llvm/src/context.rs
+++ b/compiler/rustc_codegen_llvm/src/context.rs
@@ -145,6 +145,17 @@ pub unsafe fn create_module<'ll>(
             target_data_layout = target_data_layout.replace("-n32:64-", "-n64-");
         }
     }
+    if llvm_version < (17, 0, 0) {
+        if sess.target.arch.starts_with("powerpc") {
+            // LLVM 17 specifies function pointer alignment for ppc:
+            // https://reviews.llvm.org/D147016
+            target_data_layout = target_data_layout
+                .replace("-Fn32", "")
+                .replace("-Fi32", "")
+                .replace("-Fn64", "")
+                .replace("-Fi64", "");
+        }
+    }
 
     // Ensure the data-layout values hardcoded remain the defaults.
     if sess.target.is_builtin {