Fix llvm-mc handing of x86 instructions that take 8-bit unsigned immediates.
llvm-mc gives an "invalid operand" error for instructions that take an unsigned
immediate which have the high bit set such as:
pblendw $0xc5, %xmm2, %xmm1
llvm-mc treats all x86 immediates as signed values and range checks them.
A small number of x86 instructions use the imm8 field as a set of bits.
This change only changes those instructions and where the high bit is not
ignored. The others remain unchanged.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136287 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/X86RecognizableInstr.cpp b/utils/TableGen/X86RecognizableInstr.cpp
index ea3bb70..3071d8e 100644
--- a/utils/TableGen/X86RecognizableInstr.cpp
+++ b/utils/TableGen/X86RecognizableInstr.cpp
@@ -984,6 +984,7 @@
TYPE("i32mem", TYPE_Mv)
TYPE("i32imm", TYPE_IMMv)
TYPE("i32i8imm", TYPE_IMM32)
+ TYPE("u32u8imm", TYPE_IMM32)
TYPE("GR32", TYPE_Rv)
TYPE("i64mem", TYPE_Mv)
TYPE("i64i32imm", TYPE_IMM64)
@@ -1044,6 +1045,7 @@
ENCODING("i16imm", ENCODING_IW)
}
ENCODING("i32i8imm", ENCODING_IB)
+ ENCODING("u32u8imm", ENCODING_IB)
ENCODING("SSECC", ENCODING_IB)
ENCODING("i16imm", ENCODING_Iv)
ENCODING("i16i8imm", ENCODING_IB)