ARM: improve caret diagnostics for invalid FPU name

In the case of an invalid FPU name, place the caret at the name rather than FPU
directive.

llvm-svn: 227595

2 files changed, 12 insertions, 1 deletions

diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 96f3b4e6432..2de0ffa5ec6 100644
--- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -9229,6 +9229,7 @@ static const struct {
 /// parseDirectiveFPU
 ///  ::= .fpu str
 bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
+  SMLoc FPUNameLoc = getTok().getLoc();
   StringRef FPU = getParser().parseStringToEndOfStatement().trim();
 
   unsigned ID = StringSwitch<unsigned>(FPU)
@@ -9237,7 +9238,7 @@ bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
     .Default(ARM::INVALID_FPU);
 
   if (ID == ARM::INVALID_FPU) {
-    Error(L, "Unknown FPU name");
+    Error(FPUNameLoc, "Unknown FPU name");
     return false;
   }
 
diff --git a/llvm/test/MC/ARM/directive-fpu-diagnostics.s b/llvm/test/MC/ARM/directive-fpu-diagnostics.s
new file mode 100644
index 00000000000..67c61298221
--- /dev/null
+++ b/llvm/test/MC/ARM/directive-fpu-diagnostics.s
@@ -0,0 +1,10 @@
+@ RUN: not llvm-mc -triple armv7 -filetype asm -o /dev/null %s 2>&1 \
+@ RUN:     | FileCheck %s -strict-whitespace
+
+	.text
+	.thumb
+
+	.fpu invalid
+@ CHECK: error: Unknown FPU name
+@ CHECK: .fpu invalid
+@ CHECK:      ^