1 ; RUN: llc %s -o - -O0 -regalloc=fast | FileCheck %s 2 target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128" 3 target triple = "i386-apple-macosx10.10" 4 5 @c = external global i8, align 1 6 @p = thread_local global i8* null, align 4 7 8 ; Check that regalloc fast correctly preserves EAX that is set by the TLS call 9 ; until the actual use. 10 ; PR26485. 11 ; 12 ; CHECK-LABEL: f: 13 ; Get c. 14 ; C is spilled because of the scheduling of the instructions, 15 ; but a smarter regalloc wouldn't have spilled it. 16 ; CHECK: movl L_c{{[^,]*}}, [[C_ADDR:%[a-z]+]] 17 ; CHECK-NEXT: movl [[C_ADDR]], [[C_SPILLED:[0-8]+\(%esp\)]] 18 ; Get p. 19 ; CHECK-NEXT: movl _p@{{[0-9a-zA-Z]+}}, [[P_ADDR:%[a-z]+]] 20 ; CHECK-NEXT: calll *([[P_ADDR]]) 21 ; At this point eax contiains the address of p. 22 ; Load c address. 23 ; Make sure we do not clobber eax. 24 ; CHECK-NEXT: movl [[C_SPILLED]], [[C_ADDR_RELOADED:%e[b-z]x+]] 25 ; Store c address into p. 26 ; CHECK-NEXT: movl [[C_ADDR_RELOADED]], (%eax) 27 define void @f() #0 { 28 entry: 29 store i8* @c, i8** @p, align 4 30 ret void 31 } 32
