1 ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64 2 ; X64: mov 3 ; X64-NEXT: movb %ah, (%rsi) 4 ; X64: mov 5 ; X64-NEXT: movb %ah, (%rsi) 6 ; X64: mov 7 ; X64-NEXT: movb %ah, (%rsi) 8 ; X64-NOT: mov 9 10 ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s -check-prefix=X32 11 ; X32: mov 12 ; X32-NEXT: movb %ah, (%esi) 13 ; X32: mov 14 ; X32-NEXT: movb %ah, (%esi) 15 ; X32: mov 16 ; X32-NEXT: movb %ah, (%esi) 17 ; X32-NOT: mov 18 19 ; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=W64 20 ; W64-NOT: mov 21 ; W64: movb %ch, (%rdx) 22 ; W64-NOT: mov 23 ; W64: movb %ch, (%rdx) 24 ; W64-NOT: mov 25 ; W64: movb %ch, (%rdx) 26 ; W64-NOT: mov 27 28 ; RUN: llc < %s -march=x86 | FileCheck %s -check-prefix=X86 29 ; X86-NOT: mov 30 ; X86: movb %ah, (%e 31 ; X86-NOT: mov 32 ; X86: movb %ah, (%e 33 ; X86-NOT: mov 34 ; X86: movb %ah, (%e 35 ; X86-NOT: mov 36 37 ; Use h-register extract and store. 38 39 define void @foo16(i16 inreg %p, i8* inreg %z) nounwind { 40 %q = lshr i16 %p, 8 41 %t = trunc i16 %q to i8 42 store i8 %t, i8* %z 43 ret void 44 } 45 define void @foo32(i32 inreg %p, i8* inreg %z) nounwind { 46 %q = lshr i32 %p, 8 47 %t = trunc i32 %q to i8 48 store i8 %t, i8* %z 49 ret void 50 } 51 define void @foo64(i64 inreg %p, i8* inreg %z) nounwind { 52 %q = lshr i64 %p, 8 53 %t = trunc i64 %q to i8 54 store i8 %t, i8* %z 55 ret void 56 } 57
