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| author | Scott Douglass <sdouglass@arm.com> | 2015-07-09 14:13:48 +0000 |
|---|---|---|
| committer | Scott Douglass <sdouglass@arm.com> | 2015-07-09 14:13:48 +0000 |
| commit | 2740a6372514329605d0d43ddbb4a8399d48ed29 (patch) | |
| tree | 31f8007a7e8fb406274fd30d9b159c5acacaea43 /llvm/lib/Target/ARM | |
| parent | 47a3fce4611df71732252c783392e15c3e9d05a0 (diff) | |
| download | bcm5719-llvm-2740a6372514329605d0d43ddbb4a8399d48ed29.tar.gz bcm5719-llvm-2740a6372514329605d0d43ddbb4a8399d48ed29.zip | |
[ARM] Don't be overzealous converting Thumb1 3 to 2 operands
Differential Revision: http://reviews.llvm.org/D11056
llvm-svn: 241801
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index cea7070abd0..0ae6925c28b 100644 --- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -5512,6 +5512,11 @@ void ARMAsmParser::tryConvertingToTwoOperandForm(StringRef Mnemonic, if (((Mnemonic == "add" && CarrySetting) || Mnemonic == "sub") && Op5.isReg()) Transform = false; + + // Don't transform 'add/sub{s} Rd, Rd, #imm' if the immediate fits into + // 3-bits because the ARMARM says not to. + if ((Mnemonic == "add" || Mnemonic == "sub") && Op5.isImm0_7()) + Transform = false; } if (Transform) |
