1 ; RUN: llc -o - %s -verify-machineinstrs
2 ; This used to crash when coalescing a regclass like GR16 which did not support
3 ; the sub_8bit_hi subregister with a class like GR16_ABCD that did.
4 target triple = "x86_64-apple-macosx10.10.0"
6 define void @test() #0 {
8 br i1 undef, label %loop, label %for.end597
11 %0 = load i16, ptr null, align 4
12 %1 = load i16, ptr undef, align 4
14 %or2 = trunc i16 %or1 to i8
15 store i8 %or2, ptr undef, align 4
18 %or4 = trunc i16 %or3 to i8
19 store i8 %or4, ptr undef, align 1
20 %3 = load i32, ptr undef, align 4
21 %4 = load i32, ptr undef, align 4
23 store i32 %or5, ptr undef, align 4
24 store i32 0, ptr undef, align 4