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llvm-mirror/test/CodeGen/ARM/constantpool-promote-duplicate.ll
Saleem Abdulrasool 8966da17ee ARM: track globals promoted to coalesced const pool entries
Globals that are promoted to an ARM constant pool may alias with another
existing constant pool entry. We need to keep a reference to all globals
that were promoted to each constant pool value so that we can emit a
distinct label for each promoted global. These labels are necessary so
that debug info can refer to the promoted global without an undefined
reference during linking.

Patch by Stephen Crane!

llvm-svn: 312692
2017-09-07 04:00:13 +00:00

22 lines
578 B
LLVM

; RUN: llc -mtriple=arm-eabi -relocation-model=static -arm-promote-constant < %s | FileCheck %s
@const1 = private unnamed_addr constant i32 0, align 4
@const2 = private unnamed_addr constant i32 0, align 4
; const1 and const2 both need labels for debug info, but will be coalesced into
; a single constpool entry
; CHECK-LABEL: @test1
; CHECK-DAG: const1:
; CHECK-DAG: const2:
; CHECK: .fnend
define void @test1() {
%1 = load i32, i32* @const1, align 4
call void @a(i32 %1)
%2 = load i32, i32* @const2, align 4
call void @a(i32 %2)
ret void
}
declare void @a(i32)