| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=armv7-apple-darwin -mcpu=cortex-a8 | FileCheck %s |
| ; Check if the f32 load / store pair are optimized to i32 load / store. |
| ; rdar://8944252 |
| |
| define void @t(i32 %width, float* nocapture %src, float* nocapture %dst, i32 %index) nounwind { |
| ; CHECK-LABEL: t: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: cmp r0, #0 |
| ; CHECK-NEXT: bxeq lr |
| ; CHECK-NEXT: LBB0_1: @ %bb |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr r9, [r1], r3 |
| ; CHECK-NEXT: subs r0, r0, #1 |
| ; CHECK-NEXT: str r9, [r2], #4 |
| ; CHECK-NEXT: bne LBB0_1 |
| ; CHECK-NEXT: @ %bb.2: @ %return |
| ; CHECK-NEXT: bx lr |
| entry: |
| %src6 = bitcast float* %src to i8* |
| %0 = icmp eq i32 %width, 0 |
| br i1 %0, label %return, label %bb |
| |
| bb: |
| %j.05 = phi i32 [ %2, %bb ], [ 0, %entry ] |
| %tmp = mul i32 %j.05, %index |
| %uglygep = getelementptr i8, i8* %src6, i32 %tmp |
| %src_addr.04 = bitcast i8* %uglygep to float* |
| %dst_addr.03 = getelementptr float, float* %dst, i32 %j.05 |
| %1 = load float, float* %src_addr.04, align 4 |
| store float %1, float* %dst_addr.03, align 4 |
| %2 = add i32 %j.05, 1 |
| %exitcond = icmp eq i32 %2, %width |
| br i1 %exitcond, label %return, label %bb |
| |
| return: |
| ret void |
| } |
| |
| @a1 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a2 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a3 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a4 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a5 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a6 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a7 = local_unnamed_addr global float 0.000000e+00, align 4 |
| @a8 = local_unnamed_addr global float 0.000000e+00, align 4 |
| |
| |
| declare void @_Z3fooddddddddddddddd(float, float, float, float, float, float, float, float) |
| |
| ; Because this test function is trying to pass float argument by stack, |
| ; it can be optimized to i32 load / store |
| define signext i32 @test() { |
| %1 = load float, float* @a1, align 4 |
| %2 = load float, float* @a2, align 4 |
| %3 = load float, float* @a3, align 4 |
| %4 = load float, float* @a4, align 4 |
| %5 = load float, float* @a5, align 4 |
| %6 = load float, float* @a6, align 4 |
| %7 = load float, float* @a7, align 4 |
| %8 = load float, float* @a8, align 4 |
| tail call void @_Z3fooddddddddddddddd(float %1, float %2, float %3, float %4, float %5, float %6, float %7, float %8) |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: _test: |
| ; CHECK: ldr r3, [pc, r3] |
| ; CHECK: ldr r2, [pc, r2] |
| ; CHECK: ldr r1, [pc, r1] |
| ; CHECK: ldr r0, [pc, r0] |
| ; CHECK: ldr r9, [pc, r9] |
| ; CHECK: ldr r12, [pc, r12] |
| ; CHECK: ldr lr, [pc, lr] |
| ; CHECK: stm sp, {r9, r12, lr} |
| ; CHECK: ldr r4, [pc, r4] |
| ; CHECK: str r4, [sp, #12] |
| ; CHECK: bl __Z3fooddddddddddddddd |