177 lines
6.3 KiB
LLVM
177 lines
6.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=aarch64 -sink-insts-to-avoid-spills | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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@A = external dso_local global [100 x i32], align 4
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define i32 @sink_load_and_copy(i32 %n) {
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; CHECK-LABEL: sink_load_and_copy:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_offset w19, -8
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; CHECK-NEXT: .cfi_offset w20, -16
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; CHECK-NEXT: .cfi_offset w21, -24
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; CHECK-NEXT: .cfi_offset w30, -32
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; CHECK-NEXT: mov w19, w0
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; CHECK-NEXT: cmp w0, #1
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; CHECK-NEXT: b.lt .LBB0_3
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; CHECK-NEXT: // %bb.1: // %for.body.preheader
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; CHECK-NEXT: adrp x8, A
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; CHECK-NEXT: mov w20, w19
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; CHECK-NEXT: ldr w21, [x8, :lo12:A]
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; CHECK-NEXT: .LBB0_2: // %for.body
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: mov w0, w21
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; CHECK-NEXT: bl _Z3usei
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; CHECK-NEXT: sdiv w20, w20, w0
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; CHECK-NEXT: subs w19, w19, #1
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; CHECK-NEXT: b.ne .LBB0_2
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; CHECK-NEXT: b .LBB0_4
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; CHECK-NEXT: .LBB0_3:
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; CHECK-NEXT: mov w20, w19
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; CHECK-NEXT: .LBB0_4: // %for.cond.cleanup
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; CHECK-NEXT: mov w0, w20
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; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
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; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload
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; CHECK-NEXT: ret
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entry:
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%cmp63 = icmp sgt i32 %n, 0
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br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup
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for.body.preheader:
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%0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4
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br label %for.body
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for.cond.cleanup:
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%sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ]
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ret i32 %sum.0.lcssa
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for.body:
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%lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
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%sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ]
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%call = tail call i32 @_Z3usei(i32 %0)
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%div = sdiv i32 %sum.065, %call
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%lsr.iv.next = add i32 %lsr.iv, -1
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%exitcond.not = icmp eq i32 %lsr.iv.next, 0
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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}
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define i32 @cant_sink_successive_call(i32 %n) {
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; CHECK-LABEL: cant_sink_successive_call:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_offset w19, -8
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; CHECK-NEXT: .cfi_offset w20, -16
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; CHECK-NEXT: .cfi_offset w21, -24
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; CHECK-NEXT: .cfi_offset w30, -32
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; CHECK-NEXT: mov w19, w0
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; CHECK-NEXT: cmp w0, #1
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; CHECK-NEXT: b.lt .LBB1_3
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; CHECK-NEXT: // %bb.1: // %for.body.preheader
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; CHECK-NEXT: adrp x8, A
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; CHECK-NEXT: mov w0, w19
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; CHECK-NEXT: ldr w20, [x8, :lo12:A]
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; CHECK-NEXT: bl _Z3usei
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; CHECK-NEXT: mov w21, w19
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; CHECK-NEXT: .LBB1_2: // %for.body
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: mov w0, w20
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; CHECK-NEXT: bl _Z3usei
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; CHECK-NEXT: sdiv w21, w21, w0
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; CHECK-NEXT: subs w19, w19, #1
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; CHECK-NEXT: b.ne .LBB1_2
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; CHECK-NEXT: b .LBB1_4
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; CHECK-NEXT: .LBB1_3:
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; CHECK-NEXT: mov w21, w19
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; CHECK-NEXT: .LBB1_4: // %for.cond.cleanup
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; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
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; CHECK-NEXT: mov w0, w21
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; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload
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; CHECK-NEXT: ret
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entry:
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%cmp63 = icmp sgt i32 %n, 0
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br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup
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for.body.preheader:
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%0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4
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%call0 = tail call i32 @_Z3usei(i32 %n)
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br label %for.body
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for.cond.cleanup:
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%sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ]
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ret i32 %sum.0.lcssa
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for.body:
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%lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
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%sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ]
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%call = tail call i32 @_Z3usei(i32 %0)
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%div = sdiv i32 %sum.065, %call
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%lsr.iv.next = add i32 %lsr.iv, -1
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%exitcond.not = icmp eq i32 %lsr.iv.next, 0
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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}
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define i32 @cant_sink_successive_store(i32* nocapture readnone %store, i32 %n) {
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; CHECK-LABEL: cant_sink_successive_store:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_offset w19, -8
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; CHECK-NEXT: .cfi_offset w20, -16
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; CHECK-NEXT: .cfi_offset w21, -24
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; CHECK-NEXT: .cfi_offset w30, -32
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; CHECK-NEXT: mov w19, w1
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; CHECK-NEXT: cmp w1, #1
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; CHECK-NEXT: b.lt .LBB2_3
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; CHECK-NEXT: // %bb.1: // %for.body.preheader
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; CHECK-NEXT: adrp x8, A
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; CHECK-NEXT: mov w9, #42
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; CHECK-NEXT: mov w20, w19
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; CHECK-NEXT: ldr w21, [x8, :lo12:A]
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; CHECK-NEXT: str w9, [x0]
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; CHECK-NEXT: .LBB2_2: // %for.body
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: mov w0, w21
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; CHECK-NEXT: bl _Z3usei
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; CHECK-NEXT: sdiv w20, w20, w0
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; CHECK-NEXT: subs w19, w19, #1
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; CHECK-NEXT: b.ne .LBB2_2
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; CHECK-NEXT: b .LBB2_4
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; CHECK-NEXT: .LBB2_3:
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; CHECK-NEXT: mov w20, w19
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; CHECK-NEXT: .LBB2_4: // %for.cond.cleanup
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; CHECK-NEXT: mov w0, w20
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; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
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; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload
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; CHECK-NEXT: ret
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entry:
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%cmp63 = icmp sgt i32 %n, 0
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br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup
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for.body.preheader:
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%0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4
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store i32 42, i32* %store, align 4
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br label %for.body
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for.cond.cleanup:
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%sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ]
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ret i32 %sum.0.lcssa
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for.body:
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%lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
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%sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ]
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%call = tail call i32 @_Z3usei(i32 %0)
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%div = sdiv i32 %sum.065, %call
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%lsr.iv.next = add i32 %lsr.iv, -1
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%exitcond.not = icmp eq i32 %lsr.iv.next, 0
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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}
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declare i32 @_Z3usei(i32)
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