1 ; RUN: llc -O0 -relocation-model=pic -disable-fp-elim < %s 2 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 3 target triple = "x86_64-apple-darwin10" 4 5 ; This file contains functions that may crash llc -O0 6 7 ; The DIV8 instruction produces results in AH and AL, but we don't want to use 8 ; AH in 64-bit mode. The hack used must not generate copyFromReg nodes for 9 ; aliased registers (AX and AL) - RegAllocFast does not like that. 10 ; PR7312 11 define i32 @div8() nounwind { 12 entry: 13 %0 = trunc i64 undef to i8 ; <i8> [#uses=3] 14 %1 = udiv i8 0, %0 ; <i8> [#uses=1] 15 %2 = urem i8 0, %0 ; <i8> [#uses=1] 16 %3 = icmp uge i8 %2, %0 ; <i1> [#uses=1] 17 br i1 %3, label %"40", label %"39" 18 19 "39": ; preds = %"36" 20 %4 = zext i8 %1 to i32 ; <i32> [#uses=1] 21 %5 = mul nsw i32 %4, undef ; <i32> [#uses=1] 22 %6 = add nsw i32 %5, undef ; <i32> [#uses=1] 23 %7 = icmp ne i32 %6, undef ; <i1> [#uses=1] 24 br i1 %7, label %"40", label %"41" 25 26 "40": ; preds = %"39", %"36" 27 unreachable 28 29 "41": ; preds = %"39" 30 unreachable 31 } 32
