| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=aarch64 -sink-insts-to-avoid-spills | FileCheck %s |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| |
| @A = external dso_local global [100 x i32], align 4 |
| |
| define i32 @sink_load_and_copy(i32 %n) { |
| ; CHECK-LABEL: sink_load_and_copy: |
| ; CHECK: // %bb.0: // %entry |
| ; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill |
| ; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill |
| ; CHECK-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-NEXT: .cfi_offset w19, -8 |
| ; CHECK-NEXT: .cfi_offset w20, -16 |
| ; CHECK-NEXT: .cfi_offset w21, -24 |
| ; CHECK-NEXT: .cfi_offset w30, -32 |
| ; CHECK-NEXT: mov w19, w0 |
| ; CHECK-NEXT: cmp w0, #1 |
| ; CHECK-NEXT: b.lt .LBB0_3 |
| ; CHECK-NEXT: // %bb.1: // %for.body.preheader |
| ; CHECK-NEXT: adrp x8, A |
| ; CHECK-NEXT: mov w20, w19 |
| ; CHECK-NEXT: ldr w21, [x8, :lo12:A] |
| ; CHECK-NEXT: .LBB0_2: // %for.body |
| ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: mov w0, w21 |
| ; CHECK-NEXT: bl _Z3usei |
| ; CHECK-NEXT: sdiv w20, w20, w0 |
| ; CHECK-NEXT: subs w19, w19, #1 |
| ; CHECK-NEXT: b.ne .LBB0_2 |
| ; CHECK-NEXT: b .LBB0_4 |
| ; CHECK-NEXT: .LBB0_3: |
| ; CHECK-NEXT: mov w20, w19 |
| ; CHECK-NEXT: .LBB0_4: // %for.cond.cleanup |
| ; CHECK-NEXT: mov w0, w20 |
| ; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload |
| ; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload |
| ; CHECK-NEXT: ret |
| entry: |
| %cmp63 = icmp sgt i32 %n, 0 |
| br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: |
| %0 = load i32, ptr @A, align 4 |
| br label %for.body |
| |
| for.cond.cleanup: |
| %sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ] |
| ret i32 %sum.0.lcssa |
| |
| for.body: |
| %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ] |
| %sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ] |
| %call = tail call i32 @_Z3usei(i32 %0) |
| %div = sdiv i32 %sum.065, %call |
| %lsr.iv.next = add i32 %lsr.iv, -1 |
| %exitcond.not = icmp eq i32 %lsr.iv.next, 0 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |
| |
| define i32 @cant_sink_successive_call(i32 %n) { |
| ; CHECK-LABEL: cant_sink_successive_call: |
| ; CHECK: // %bb.0: // %entry |
| ; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill |
| ; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill |
| ; CHECK-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-NEXT: .cfi_offset w19, -8 |
| ; CHECK-NEXT: .cfi_offset w20, -16 |
| ; CHECK-NEXT: .cfi_offset w21, -24 |
| ; CHECK-NEXT: .cfi_offset w30, -32 |
| ; CHECK-NEXT: mov w19, w0 |
| ; CHECK-NEXT: cmp w0, #1 |
| ; CHECK-NEXT: b.lt .LBB1_3 |
| ; CHECK-NEXT: // %bb.1: // %for.body.preheader |
| ; CHECK-NEXT: adrp x8, A |
| ; CHECK-NEXT: mov w0, w19 |
| ; CHECK-NEXT: ldr w20, [x8, :lo12:A] |
| ; CHECK-NEXT: bl _Z3usei |
| ; CHECK-NEXT: mov w21, w19 |
| ; CHECK-NEXT: .LBB1_2: // %for.body |
| ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: mov w0, w20 |
| ; CHECK-NEXT: bl _Z3usei |
| ; CHECK-NEXT: sdiv w21, w21, w0 |
| ; CHECK-NEXT: subs w19, w19, #1 |
| ; CHECK-NEXT: b.ne .LBB1_2 |
| ; CHECK-NEXT: b .LBB1_4 |
| ; CHECK-NEXT: .LBB1_3: |
| ; CHECK-NEXT: mov w21, w19 |
| ; CHECK-NEXT: .LBB1_4: // %for.cond.cleanup |
| ; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload |
| ; CHECK-NEXT: mov w0, w21 |
| ; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload |
| ; CHECK-NEXT: ret |
| entry: |
| %cmp63 = icmp sgt i32 %n, 0 |
| br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: |
| %0 = load i32, ptr @A, align 4 |
| %call0 = tail call i32 @_Z3usei(i32 %n) |
| br label %for.body |
| |
| for.cond.cleanup: |
| %sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ] |
| ret i32 %sum.0.lcssa |
| |
| for.body: |
| %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ] |
| %sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ] |
| %call = tail call i32 @_Z3usei(i32 %0) |
| %div = sdiv i32 %sum.065, %call |
| %lsr.iv.next = add i32 %lsr.iv, -1 |
| %exitcond.not = icmp eq i32 %lsr.iv.next, 0 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |
| |
| define i32 @cant_sink_successive_store(ptr nocapture readnone %store, i32 %n) { |
| ; CHECK-LABEL: cant_sink_successive_store: |
| ; CHECK: // %bb.0: // %entry |
| ; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill |
| ; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill |
| ; CHECK-NEXT: .cfi_def_cfa_offset 32 |
| ; CHECK-NEXT: .cfi_offset w19, -8 |
| ; CHECK-NEXT: .cfi_offset w20, -16 |
| ; CHECK-NEXT: .cfi_offset w21, -24 |
| ; CHECK-NEXT: .cfi_offset w30, -32 |
| ; CHECK-NEXT: mov w19, w1 |
| ; CHECK-NEXT: cmp w1, #1 |
| ; CHECK-NEXT: b.lt .LBB2_3 |
| ; CHECK-NEXT: // %bb.1: // %for.body.preheader |
| ; CHECK-NEXT: adrp x8, A |
| ; CHECK-NEXT: mov w21, w19 |
| ; CHECK-NEXT: ldr w20, [x8, :lo12:A] |
| ; CHECK-NEXT: mov w8, #42 // =0x2a |
| ; CHECK-NEXT: str w8, [x0] |
| ; CHECK-NEXT: .LBB2_2: // %for.body |
| ; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: mov w0, w20 |
| ; CHECK-NEXT: bl _Z3usei |
| ; CHECK-NEXT: sdiv w21, w21, w0 |
| ; CHECK-NEXT: subs w19, w19, #1 |
| ; CHECK-NEXT: b.ne .LBB2_2 |
| ; CHECK-NEXT: b .LBB2_4 |
| ; CHECK-NEXT: .LBB2_3: |
| ; CHECK-NEXT: mov w21, w19 |
| ; CHECK-NEXT: .LBB2_4: // %for.cond.cleanup |
| ; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload |
| ; CHECK-NEXT: mov w0, w21 |
| ; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload |
| ; CHECK-NEXT: ret |
| entry: |
| %cmp63 = icmp sgt i32 %n, 0 |
| br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: |
| %0 = load i32, ptr @A, align 4 |
| store i32 42, ptr %store, align 4 |
| br label %for.body |
| |
| for.cond.cleanup: |
| %sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ] |
| ret i32 %sum.0.lcssa |
| |
| for.body: |
| %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ] |
| %sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ] |
| %call = tail call i32 @_Z3usei(i32 %0) |
| %div = sdiv i32 %sum.065, %call |
| %lsr.iv.next = add i32 %lsr.iv, -1 |
| %exitcond.not = icmp eq i32 %lsr.iv.next, 0 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |
| |
| declare i32 @_Z3usei(i32) |