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