From ef24de24a82fe681581cc130f342363c47c0969a Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 7 Jun 2024 07:48:48 +0200
Subject: Merging upstream version 1.75.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 compiler/rustc_codegen_ssa/src/mir/block.rs | 63 ++++++-----------------------
 1 file changed, 13 insertions(+), 50 deletions(-)

(limited to 'compiler/rustc_codegen_ssa/src/mir/block.rs')

diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs
index bd0707edf..3d2d8f8b5 100644
--- a/compiler/rustc_codegen_ssa/src/mir/block.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/block.rs
@@ -17,8 +17,7 @@ use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, ValidityRequirement};
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
 use rustc_middle::ty::{self, Instance, Ty};
 use rustc_session::config::OptLevel;
-use rustc_span::source_map::Span;
-use rustc_span::{sym, Symbol};
+use rustc_span::{sym, Span, Symbol};
 use rustc_target::abi::call::{ArgAbi, FnAbi, PassMode, Reg};
 use rustc_target::abi::{self, HasDataLayout, WrappingRange};
 use rustc_target::spec::abi::Abi;
@@ -213,7 +212,7 @@ impl<'a, 'tcx> TerminatorCodegenHelper<'tcx> {
                 self.funclet(fx),
             );
             if fx.mir[self.bb].is_cleanup {
-                bx.do_not_inline(invokeret);
+                bx.apply_attrs_to_cleanup_callsite(invokeret);
             }
 
             if let Some((ret_dest, target)) = destination {
@@ -228,11 +227,7 @@ impl<'a, 'tcx> TerminatorCodegenHelper<'tcx> {
         } else {
             let llret = bx.call(fn_ty, fn_attrs, Some(&fn_abi), fn_ptr, &llargs, self.funclet(fx));
             if fx.mir[self.bb].is_cleanup {
-                // Cleanup is always the cold path. Don't inline
-                // drop glue. Also, when there is a deeply-nested
-                // struct, there are "symmetry" issues that cause
-                // exponential inlining - see issue #41696.
-                bx.do_not_inline(llret);
+                bx.apply_attrs_to_cleanup_callsite(llret);
             }
 
             if let Some((ret_dest, target)) = destination {
@@ -1269,8 +1264,8 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 fn_span,
                 mergeable_succ(),
             ),
-            mir::TerminatorKind::GeneratorDrop | mir::TerminatorKind::Yield { .. } => {
-                bug!("generator ops in codegen")
+            mir::TerminatorKind::CoroutineDrop | mir::TerminatorKind::Yield { .. } => {
+                bug!("coroutine ops in codegen")
             }
             mir::TerminatorKind::FalseEdge { .. } | mir::TerminatorKind::FalseUnwind { .. } => {
                 bug!("borrowck false edges in codegen")
@@ -1453,46 +1448,12 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
     fn get_caller_location(
         &mut self,
         bx: &mut Bx,
-        mut source_info: mir::SourceInfo,
+        source_info: mir::SourceInfo,
     ) -> OperandRef<'tcx, Bx::Value> {
-        let tcx = bx.tcx();
-
-        let mut span_to_caller_location = |span: Span| {
-            let topmost = span.ctxt().outer_expn().expansion_cause().unwrap_or(span);
-            let caller = tcx.sess.source_map().lookup_char_pos(topmost.lo());
-            let const_loc = tcx.const_caller_location((
-                Symbol::intern(&caller.file.name.prefer_remapped().to_string_lossy()),
-                caller.line as u32,
-                caller.col_display as u32 + 1,
-            ));
+        self.mir.caller_location_span(source_info, self.caller_location, bx.tcx(), |span: Span| {
+            let const_loc = bx.tcx().span_as_caller_location(span);
             OperandRef::from_const(bx, const_loc, bx.tcx().caller_location_ty())
-        };
-
-        // Walk up the `SourceScope`s, in case some of them are from MIR inlining.
-        // If so, the starting `source_info.span` is in the innermost inlined
-        // function, and will be replaced with outer callsite spans as long
-        // as the inlined functions were `#[track_caller]`.
-        loop {
-            let scope_data = &self.mir.source_scopes[source_info.scope];
-
-            if let Some((callee, callsite_span)) = scope_data.inlined {
-                // Stop inside the most nested non-`#[track_caller]` function,
-                // before ever reaching its caller (which is irrelevant).
-                if !callee.def.requires_caller_location(tcx) {
-                    return span_to_caller_location(source_info.span);
-                }
-                source_info.span = callsite_span;
-            }
-
-            // Skip past all of the parents with `inlined: None`.
-            match scope_data.inlined_parent_scope {
-                Some(parent) => source_info.scope = parent,
-                None => break,
-            }
-        }
-
-        // No inlined `SourceScope`s, or all of them were `#[track_caller]`.
-        self.caller_location.unwrap_or_else(|| span_to_caller_location(source_info.span))
+        })
     }
 
     fn get_personality_slot(&mut self, bx: &mut Bx) -> PlaceRef<'tcx, Bx::Value> {
@@ -1559,7 +1520,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
     }
 
     fn terminate_block(&mut self, reason: UnwindTerminateReason) -> Bx::BasicBlock {
-        if let Some((cached_bb, cached_reason)) = self.terminate_block && reason == cached_reason {
+        if let Some((cached_bb, cached_reason)) = self.terminate_block
+            && reason == cached_reason
+        {
             return cached_bb;
         }
 
@@ -1627,7 +1590,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         let fn_ty = bx.fn_decl_backend_type(&fn_abi);
 
         let llret = bx.call(fn_ty, None, Some(&fn_abi), fn_ptr, &[], funclet.as_ref());
-        bx.do_not_inline(llret);
+        bx.apply_attrs_to_cleanup_callsite(llret);
 
         bx.unreachable();
 
-- 
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