[clang] [CIR] Upstream binary assignments and comma (PR #135115)

[Erich Keane via cfe-commits]

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@@ -0,0 +1,53 @@
+// RUN: %clang_cc1 -std=c23 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
+// RUN: FileCheck --input-file=%t.cir %s -check-prefix=CIR
+// RUN: %clang_cc1 -std=c23 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fclangir -emit-llvm %s -o %t-cir.ll
+// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=LLVM
+// RUN: %clang_cc1 -std=c23 -triple x86_64-unknown-linux-gnu -Wno-unused-value -emit-llvm %s -o %t.ll
+// RUN: FileCheck --input-file=%t.ll %s -check-prefix=OGCG
+
+void comma(void) {
+    bool b;
+    char c;
+    float f;
+    int i;
+
+    b = true, c = 65, f = 3.14f, i = 42;
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erichkeane wrote:

If this ends up being the comma operator (i Think it is?) we probably want to do some tests like: 
`b = 5.5, false`

https://github.com/llvm/llvm-project/pull/135115