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authorJim Grosbach <grosbach@apple.com>2011-12-22 17:37:00 +0000
committerJim Grosbach <grosbach@apple.com>2011-12-22 17:37:00 +0000
commitde626ad8726677328e10dbdc15011254214437d7 (patch)
treeb6ecc0714da1cfd98cfed51a23670a301804795c
parent18c8d12dea944086ef0ce2f674ca8a34de2bbd74 (diff)
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ARM assembly parser canonicallize on 'lsl' for shift-by-zero form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147152 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Target/ARM/AsmParser/ARMAsmParser.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 4f4a135a11..d70511ff55 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -2421,6 +2421,10 @@ int ARMAsmParser::tryParseShiftRegister(
Error(ImmLoc, "immediate shift value out of range");
return -1;
}
+ // shift by zero is a nop. Always send it through as lsl.
+ // ('as' compatibility)
+ if (Imm == 0)
+ ShiftTy = ARM_AM::lsl;
} else if (Parser.getTok().is(AsmToken::Identifier)) {
ShiftReg = tryParseRegister();
SMLoc L = Parser.getTok().getLoc();