llvm/test/CodeGen/ARM/negative-offset.ll
Renato Golin ccfbbaca3f ARM: Negative offset support problem
This patch is to permit a negative offset usage for a non frame access.

Patch by Igor Oblakov.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217431 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-09 09:57:59 +00:00

18 lines
485 B
LLVM

; RUN: llc -mtriple=arm-eabi -O3 %s -o - | FileCheck %s
; Function Attrs: nounwind readonly
define arm_aapcscc i32 @sum(i32* nocapture readonly %p) #0 {
entry:
;CHECK-LABEL: sum:
;CHECK-NOT: sub
;CHECK: ldr r{{.*}}, [r0, #-16]
;CHECK: ldr r{{.*}}, [r0, #-8]
%arrayidx = getelementptr inbounds i32* %p, i32 -4
%0 = load i32* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds i32* %p, i32 -2
%1 = load i32* %arrayidx1, align 4
%add = add nsw i32 %1, %0
ret i32 %add
}