+
+; rdar://13978317
+; Pair of loads not formed when lifetime markers are set.
+%struct.Test = type { i32, i32, i32 }
+
+@TestVar = external global %struct.Test
+
+define void @Func1() nounwind ssp {
+; CHECK: @Func1
+entry:
+; A8: movw [[BASE:r[0-9]+]], :lower16:{{.*}}TestVar{{.*}}
+; A8: movt [[BASE]], :upper16:{{.*}}TestVar{{.*}}
+; A8: ldrd [[FIELD1:r[0-9]+]], [[FIELD2:r[0-9]+]], {{\[}}[[BASE]], #4]
+; A8-NEXT: add [[FIELD1]], [[FIELD2]]
+; A8-NEXT: str [[FIELD1]], {{\[}}[[BASE]]{{\]}}
+ %orig_blocks = alloca [256 x i16], align 2
+ %0 = bitcast [256 x i16]* %orig_blocks to i8*call void @llvm.lifetime.start(i64 512, i8* %0) nounwind
+ %tmp1 = load i32, i32* getelementptr inbounds (%struct.Test, %struct.Test* @TestVar, i32 0, i32 1), align 4
+ %tmp2 = load i32, i32* getelementptr inbounds (%struct.Test, %struct.Test* @TestVar, i32 0, i32 2), align 4
+ %add = add nsw i32 %tmp2, %tmp1
+ store i32 %add, i32* getelementptr inbounds (%struct.Test, %struct.Test* @TestVar, i32 0, i32 0), align 4
+ call void @llvm.lifetime.end(i64 512, i8* %0) nounwind
+ ret void
+}
+
+declare void @extfunc(i32, i32, i32, i32)
+
+; CHECK-LABEL: Func2:
+; A8: ldrd
+; A8: blx
+; A8: pop
+define void @Func2(i32* %p) {
+entry:
+ %addr0 = getelementptr i32, i32* %p, i32 0
+ %addr1 = getelementptr i32, i32* %p, i32 1
+ %v0 = load i32, i32* %addr0
+ %v1 = load i32, i32* %addr1
+ ; try to force %v0/%v1 into non-adjacent registers
+ call void @extfunc(i32 %v0, i32 0, i32 0, i32 %v1)
+ ret void
+}
+
+; CHECK-LABEL: strd_spill_ldrd_reload:
+; A8: strd r1, r0, [sp]
+; M3: strd r1, r0, [sp]
+; BASIC: strd r1, r0, [sp]
+; GREEDY: strd r0, r1, [sp]
+; CHECK: @ InlineAsm Start
+; CHECK: @ InlineAsm End
+; A8: ldrd r2, r1, [sp]
+; M3: ldrd r2, r1, [sp]
+; BASIC: ldrd r2, r1, [sp]
+; GREEDY: ldrd r1, r2, [sp]
+; CHECK: bl{{x?}} _extfunc
+define void @strd_spill_ldrd_reload(i32 %v0, i32 %v1) {
+ ; force %v0 and %v1 to be spilled
+ call void asm sideeffect "", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr}"()
+ ; force the reloaded %v0, %v1 into different registers
+ call void @extfunc(i32 0, i32 %v0, i32 %v1, i32 7)
+ ret void
+}
+
+declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind
+declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind