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1; RUN: llc -o - %s -verify-machineinstrs2; This used to crash when coalescing a regclass like GR16 which did not support3; the sub_8bit_hi subregister with a class like GR16_ABCD that did.4target triple = "x86_64-apple-macosx10.10.0"5 6define void @test(i1 %arg) #0 {7entry:8 br i1 %arg, label %loop, label %for.end5979 10loop:11 %0 = load i16, ptr null, align 412 %1 = load i16, ptr undef, align 413 %or1 = or i16 %1, %014 %or2 = trunc i16 %or1 to i815 store i8 %or2, ptr undef, align 416 %2 = or i16 %1, %017 %or3 = lshr i16 %2, 818 %or4 = trunc i16 %or3 to i819 store i8 %or4, ptr undef, align 120 %3 = load i32, ptr undef, align 421 %4 = load i32, ptr undef, align 422 %or5 = or i32 %4, %323 store i32 %or5, ptr undef, align 424 store i32 0, ptr undef, align 425 br label %loop26 27for.end597:28 ret void29}30