From: Eric Botcazou <ebotcazou@adacore.com>
Date: Mon, 10 Jan 2022 11:40:10 +0000 (+0100)
Subject: Properly enable -freorder-blocks-and-partition on 64-bit Windows
X-Git-Tag: basepoints/gcc-13~1908
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8234b0dcb2484f836d0fb8f12aa6b04f5e66db6f;p=thirdparty%2Fgcc.git

Properly enable -freorder-blocks-and-partition on 64-bit Windows

The PR uncovered that -freorder-blocks-and-partition was working by accident
on 64-bit Windows, i.e. the middle-end was supposed to disable it with SEH.
After the change installed on mainline, the middle-end properly disables it,
which is too bad since a significant amount of work went into it for SEH.

gcc/
	PR target/103465
	* coretypes.h (unwind_info_type): Swap UI_SEH and UI_TARGET.
---

diff --git a/gcc/coretypes.h b/gcc/coretypes.h
index 0769a78a87c2..f35593734339 100644
--- a/gcc/coretypes.h
+++ b/gcc/coretypes.h
@@ -228,15 +228,17 @@ enum stack_protector {
   SPCT_FLAG_EXPLICIT = 4
 };
 
-/* Types of unwind/exception handling info that can be generated.  */
+/* Types of unwind/exception handling info that can be generated.
+   Note that a UI_TARGET (or larger) setting is considered to be
+   incompatible with -freorder-blocks-and-partition.  */
 
 enum unwind_info_type
 {
   UI_NONE,
   UI_SJLJ,
   UI_DWARF2,
-  UI_TARGET,
-  UI_SEH
+  UI_SEH,
+  UI_TARGET
 };
 
 /* Callgraph node profile representation.  */