Fix incorrect asm-printing of some NEON immediates. Fix weak testcase so
that it checks the immediate values, not just the instructions opcodes.
Radar 8110263.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107487 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
index b59852e..b4abb65 100644
--- a/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
@@ -799,8 +799,8 @@
Val = Imm8 << (8 * ByteNum);
} else if ((OpCmode & 0xe) == 0xc) {
// 32-bit vector elements, one byte with low bits set
- unsigned ByteNum = (OpCmode & 0x1);
- Val = (Imm8 << (8 * ByteNum)) | (0xffff >> (8 * (1 - ByteNum)));
+ unsigned ByteNum = 1 + (OpCmode & 0x1);
+ Val = (Imm8 << (8 * ByteNum)) | (0xffff >> (8 * (2 - ByteNum)));
} else if (OpCmode == 0x1e) {
// 64-bit vector elements
for (unsigned ByteNum = 0; ByteNum < 8; ++ByteNum) {