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-rw-r--r--meta/recipes-devtools/llvm/llvm/0001-AsmMatcherEmitter-sort-ClassInfo-lists-by-name-as-we.patch31
1 files changed, 31 insertions, 0 deletions
diff --git a/meta/recipes-devtools/llvm/llvm/0001-AsmMatcherEmitter-sort-ClassInfo-lists-by-name-as-we.patch b/meta/recipes-devtools/llvm/llvm/0001-AsmMatcherEmitter-sort-ClassInfo-lists-by-name-as-we.patch
new file mode 100644
index 0000000000..a5c53b6657
--- /dev/null
+++ b/meta/recipes-devtools/llvm/llvm/0001-AsmMatcherEmitter-sort-ClassInfo-lists-by-name-as-we.patch
@@ -0,0 +1,31 @@
+From 3b30a9bda88374e8f03bf96e972aee5bd214b98b Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Fri, 27 Nov 2020 10:11:08 +0000
+Subject: [PATCH] AsmMatcherEmitter: sort ClassInfo lists by name as well
+
+Otherwise, there are instances which are identical in
+every other field and therefore sort non-reproducibly
+(which breaks binary and source reproducibiliy).
+
+Upstream-Status: Submitted [https://reviews.llvm.org/D97477]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+---
+ llvm/utils/TableGen/AsmMatcherEmitter.cpp | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/llvm/utils/TableGen/AsmMatcherEmitter.cpp b/llvm/utils/TableGen/AsmMatcherEmitter.cpp
+index 73724e662f9e..1ca9c73415db 100644
+--- a/llvm/utils/TableGen/AsmMatcherEmitter.cpp
++++ b/llvm/utils/TableGen/AsmMatcherEmitter.cpp
+@@ -361,7 +361,10 @@ public:
+ // name of a class shouldn't be significant. However, some of the backends
+ // accidentally rely on this behaviour, so it will have to stay like this
+ // until they are fixed.
+- return ValueName < RHS.ValueName;
++ if (ValueName != RHS.ValueName)
++ return ValueName < RHS.ValueName;
++ // All else being equal, we should sort by name, for source and binary reproducibility
++ return Name < RHS.Name;
+ }
+ };
+