Canonicalize register names properly.
Fixes rdar://9425559
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133486 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index 86b9e2b..e054191 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -1286,6 +1286,8 @@
CGM.ErrorUnsupported(&Stmt, "__asm__");
return Constraint;
}
+ // Canonicalize the register here before returning it.
+ Register = Target.getNormalizedGCCRegisterName(Register);
return "{" + Register.str() + "}";
}
diff --git a/test/CodeGen/arm-asm-variable.c b/test/CodeGen/arm-asm-variable.c
index 20648e4..8088051 100644
--- a/test/CodeGen/arm-asm-variable.c
+++ b/test/CodeGen/arm-asm-variable.c
@@ -20,3 +20,12 @@
return r;
}
+
+// Make sure we translate register names properly.
+void bar (void) {
+ register unsigned int rn asm("r14");
+ register unsigned int d asm("r2");
+
+ // CHECK: call i32 asm sideeffect "sub $1, $1, #32", "={r2},{lr}"
+ asm volatile ("sub %1, %1, #32" : "=r"(d) : "r"(rn));
+}