30 lines
806 B
LLVM
30 lines
806 B
LLVM
; RUN: llc -o - %s -verify-machineinstrs
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; This used to crash when coalescing a regclass like GR16 which did not support
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; the sub_8bit_hi subregister with a class like GR16_ABCD that did.
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target triple = "x86_64-apple-macosx10.10.0"
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define void @test() #0 {
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entry:
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br i1 undef, label %loop, label %for.end597
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loop:
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%0 = load i16, i16* null, align 4
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%1 = load i16, i16* undef, align 4
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%or1 = or i16 %1, %0
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%or2 = trunc i16 %or1 to i8
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store i8 %or2, i8* undef, align 4
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%2 = or i16 %1, %0
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%or3 = lshr i16 %2, 8
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%or4 = trunc i16 %or3 to i8
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store i8 %or4, i8* undef, align 1
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%3 = load i32, i32* undef, align 4
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%4 = load i32, i32* undef, align 4
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%or5 = or i32 %4, %3
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store i32 %or5, i32* undef, align 4
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store i32 0, i32* undef, align 4
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br label %loop
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for.end597:
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ret void
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}
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