1 ; RUN: llc -mattr=-bmi < %s -mtriple=x86_64-linux | FileCheck %s 2 3 ; LLVM creates virtual registers for values live across blocks 4 ; based on the type of the value. Make sure that the extracts 5 ; here use the GR64_NOREX register class for their result, 6 ; instead of plain GR64. 7 8 ; CHECK: foo: 9 ; CHECK: movzbl %{{[abcd]}}h, %e 10 ; CHECK: movzbl %{{[abcd]}}h, %e 11 ; CHECK: movzbl %{{[abcd]}}h, %e 12 ; CHECK: movzbl %{{[abcd]}}h, %e 13 ; CHECK: movzbl %{{[abcd]}}h, %e 14 ; CHECK: movzbl %{{[abcd]}}h, %e 15 ; CHECK: movzbl %{{[abcd]}}h, %e 16 ; CHECK: movzbl %{{[abcd]}}h, %e 17 ; CHECK: ret 18 19 define i64 @foo(i64 %a, i64 %b, i64 %c, i64 %d, 20 i64 %e, i64 %f, i64 %g, i64 %h) { 21 %sa = lshr i64 %a, 8 22 %A = and i64 %sa, 255 23 %sb = lshr i64 %b, 8 24 %B = and i64 %sb, 255 25 %sc = lshr i64 %c, 8 26 %C = and i64 %sc, 255 27 %sd = lshr i64 %d, 8 28 %D = and i64 %sd, 255 29 %se = lshr i64 %e, 8 30 %E = and i64 %se, 255 31 %sf = lshr i64 %f, 8 32 %F = and i64 %sf, 255 33 %sg = lshr i64 %g, 8 34 %G = and i64 %sg, 255 35 %sh = lshr i64 %h, 8 36 %H = and i64 %sh, 255 37 br label %next 38 39 next: 40 %u = add i64 %A, %B 41 %v = add i64 %C, %D 42 %w = add i64 %E, %F 43 %x = add i64 %G, %H 44 %y = add i64 %u, %v 45 %z = add i64 %w, %x 46 %t = add i64 %y, %z 47 ret i64 %t 48 } 49
