ldm-stm-i256.ll
1.46 KB
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; RUN: llc -mtriple=armv7--eabi -verify-machineinstrs < %s | FileCheck %s
; Check the way we schedule/merge a bunch of loads and stores.
; Originally test/CodeGen/ARM/2011-07-07-ScheduleDAGCrash.ll ; now
; being used as a test of optimizations related to ldm/stm.
; FIXME: We could merge more loads/stores with regalloc hints.
; FIXME: Fix scheduling so we don't have 16 live registers.
define void @f(i256* nocapture %a, i256* nocapture %b, i256* nocapture %cc, i256* nocapture %dd) nounwind uwtable noinline ssp {
entry:
%c = load i256, i256* %cc
%d = load i256, i256* %dd
%add = add nsw i256 %c, %d
store i256 %add, i256* %a, align 8
%or = or i256 %c, 1606938044258990275541962092341162602522202993782792835301376
%add6 = add nsw i256 %or, %d
store i256 %add6, i256* %b, align 8
ret void
; CHECK-DAG: ldm r2
; CHECK-DAG: ldr {{.*}}, [r3]
; CHECK-DAG: ldr {{.*}}, [r3, #4]
; CHECK-DAG: ldr {{.*}}, [r3, #8]
; CHECK-DAG: ldr {{.*}}, [r3, #12]
; CHECK-DAG: ldr {{.*}}, [r3, #16]
; CHECK-DAG: ldr {{.*}}, [r3, #20]
; CHECK-DAG: ldr {{.*}}, [r3, #24]
; CHECK-DAG: ldr {{.*}}, [r3, #28]
; CHECK-DAG: ldr {{.*}}, [r2, #20]
; CHECK-DAG: ldr {{.*}}, [r2, #24]
; CHECK-DAG: ldr {{.*}}, [r2, #28]
; CHECK-DAG: stm r0
; CHECK-DAG: str {{.*}}, [r0, #20]
; CHECK-DAG: str {{.*}}, [r0, #24]
; CHECK-DAG: str {{.*}}, [r0, #28]
; CHECK-DAG: stm r1
; CHECK-DAG: str {{.*}}, [r1, #20]
; CHECK-DAG: str {{.*}}, [r1, #24]
; CHECK-DAG: str {{.*}}, [r1, #28]
}