[PATCH] Fixing incorrect ARM ASM generation for BMOVPCRX_CALL MI

[Chris Cadwallader]

A BMOVPCRX_CALL instruction is generated by lowering a .bc with triple=arm-none-linux-[gnueabi | android] which has one operand incorrectly lowered as an immediate.

<repro>
clang -O0 -emit-llvm -target arm-none-linux-gnueabi -fPIC -c -o SimpleIndirect.arm.bc ./projects/test-suite/SingleSource/UnitTests/2006-01-29-SimpleIndirectCall.c

llc -O0 -mtriple=arm-none-linux-gnueabi -o SimpleIndirect.s ./SimpleIndirect.arm.bc

</repro>

The above produces a .s with BMOVPCRX_CALL lowered to:

        mov     lr, pc
        mov     pc, #63


which causes a segfault at runtime of the test program.

- Chris


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