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1; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X642; X64: mov3; X64-NEXT: movb %ah, (%rsi)4; X64: mov5; X64-NEXT: movb %ah, (%rsi)6; X64: mov7; X64-NEXT: movb %ah, (%rsi)8; X64-NOT: mov9 10; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s -check-prefix=X3211; X32: mov12; X32-NEXT: movb %ah, (%esi)13; X32: mov14; X32-NEXT: movb %ah, (%esi)15; X32: mov16; X32-NEXT: movb %ah, (%esi)17; X32-NOT: mov18 19; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=W6420; W64-NOT: mov21; W64: movb %ch, (%rdx)22; W64-NOT: mov23; W64: movb %ch, (%rdx)24; W64-NOT: mov25; W64: movb %ch, (%rdx)26; W64-NOT: mov27 28; RUN: llc < %s -mtriple=i686-- | FileCheck %s -check-prefix=X8629; X86-NOT: mov30; X86: movb %ah, (%e31; X86-NOT: mov32; X86: movb %ah, (%e33; X86-NOT: mov34; X86: movb %ah, (%e35; X86-NOT: mov36 37; Use h-register extract and store.38 39define void @foo16(i16 inreg %p, ptr inreg %z) nounwind {40 %q = lshr i16 %p, 841 %t = trunc i16 %q to i842 store i8 %t, ptr %z43 ret void44}45define void @foo32(i32 inreg %p, ptr inreg %z) nounwind {46 %q = lshr i32 %p, 847 %t = trunc i32 %q to i848 store i8 %t, ptr %z49 ret void50}51define void @foo64(i64 inreg %p, ptr inreg %z) nounwind {52 %q = lshr i64 %p, 853 %t = trunc i64 %q to i854 store i8 %t, ptr %z55 ret void56}57