llvm-6502/test/CodeGen/Thumb2/thumb2-ldm.ll
James Molloy 40ae57cc0a Fix the Load/Store optimization pass to work with Thumb1.
Patch by Moritz Roth!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208992 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-16 14:14:30 +00:00

43 lines
1.6 KiB
LLVM

; RUN: llc < %s -mtriple=thumbv7-apple-ios -mattr=+thumb2 | FileCheck %s
@X = external global [0 x i32] ; <[0 x i32]*> [#uses=5]
define i32 @t1() {
; CHECK-LABEL: t1:
; CHECK: push {r7, lr}
; CHECK: ldrd
; CHECK: pop {r7, pc}
%tmp = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 0) ; <i32> [#uses=1]
%tmp3 = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 1) ; <i32> [#uses=1]
%tmp4 = call i32 @f1( i32 %tmp, i32 %tmp3 ) ; <i32> [#uses=1]
ret i32 %tmp4
}
define i32 @t2() {
; CHECK-LABEL: t2:
; CHECK: push {r7, lr}
; CHECK: ldm
; CHECK: pop {r7, pc}
%tmp = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 2) ; <i32> [#uses=1]
%tmp3 = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 3) ; <i32> [#uses=1]
%tmp5 = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 4) ; <i32> [#uses=1]
%tmp6 = call i32 @f2( i32 %tmp, i32 %tmp3, i32 %tmp5 ) ; <i32> [#uses=1]
ret i32 %tmp6
}
define i32 @t3() {
; CHECK-LABEL: t3:
; CHECK: push {r7, lr}
; CHECK: ldm
; CHECK: pop {r7, pc}
%tmp = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 1) ; <i32> [#uses=1]
%tmp3 = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 2) ; <i32> [#uses=1]
%tmp5 = load i32* getelementptr ([0 x i32]* @X, i32 0, i32 3) ; <i32> [#uses=1]
%tmp6 = call i32 @f2( i32 %tmp, i32 %tmp3, i32 %tmp5 ) ; <i32> [#uses=1]
ret i32 %tmp6
}
declare i32 @f1(i32, i32)
declare i32 @f2(i32, i32, i32)