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28 lines
671 B
LLVM
28 lines
671 B
LLVM
; RUN: llc < %s -march=x86-64 > %t
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; RUN: grep mov %t | count 6
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; RUN: grep {movb %ah, (%rsi)} %t | count 3
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; RUN: llc < %s -march=x86 > %t
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; RUN: grep mov %t | count 3
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; RUN: grep {movb %ah, (%e} %t | count 3
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; Use h-register extract and store.
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define void @foo16(i16 inreg %p, i8* inreg %z) nounwind {
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%q = lshr i16 %p, 8
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%t = trunc i16 %q to i8
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store i8 %t, i8* %z
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ret void
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}
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define void @foo32(i32 inreg %p, i8* inreg %z) nounwind {
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%q = lshr i32 %p, 8
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%t = trunc i32 %q to i8
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store i8 %t, i8* %z
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ret void
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}
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define void @foo64(i64 inreg %p, i8* inreg %z) nounwind {
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%q = lshr i64 %p, 8
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%t = trunc i64 %q to i8
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store i8 %t, i8* %z
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ret void
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}
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