blob: 08a8f4280d3b81716b9c5b23f00fb6817b23d3bb [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; PR35221. Test that external global address is not reloaded from GOT in each BB.
; RUN: llc < %s -mtriple=armv7-linux-gnueabi -relocation-model=pic | FileCheck %s -check-prefix=LINUX-PIC
@x = external global i8, align 1
define signext i8 @foo() {
; LINUX-PIC-LABEL: foo:
; LINUX-PIC: @ %bb.0: @ %entry
; LINUX-PIC-NEXT: .save {r4, lr}
; LINUX-PIC-NEXT: push {r4, lr}
; LINUX-PIC-NEXT: ldr r4, .LCPI0_0
; LINUX-PIC-NEXT: mov r0, #0
; LINUX-PIC-NEXT: .LPC0_0:
; LINUX-PIC-NEXT: ldr r4, [pc, r4]
; LINUX-PIC-NEXT: ldrb r1, [r4]
; LINUX-PIC-NEXT: cmp r1, #0
; LINUX-PIC-NEXT: beq .LBB0_2
; LINUX-PIC-NEXT: @ %bb.1: @ %common.ret
; LINUX-PIC-NEXT: sxtb r0, r0
; LINUX-PIC-NEXT: pop {r4, pc}
; LINUX-PIC-NEXT: .LBB0_2: @ %bb1
; LINUX-PIC-NEXT: bl bar
; LINUX-PIC-NEXT: ldrb r0, [r4]
; LINUX-PIC-NEXT: sxtb r0, r0
; LINUX-PIC-NEXT: pop {r4, pc}
; LINUX-PIC-NEXT: .p2align 2
; LINUX-PIC-NEXT: @ %bb.3:
; LINUX-PIC-NEXT: .LCPI0_0:
; LINUX-PIC-NEXT: .Ltmp0:
; LINUX-PIC-NEXT: .long x(GOT_PREL)-((.LPC0_0+8)-.Ltmp0)
entry:
%0 = load i8, ptr @x
%tobool = icmp eq i8 %0, 0
br i1 %tobool, label %bb1, label %bb2
bb1:
call void @bar()
; No more pc-relative loads! Reuse r[[B]].
%1 = load i8, ptr @x
ret i8 %1
bb2:
ret i8 0
}
declare void @bar()