eb7d16ea25
mflr is kind of expensive on Power version smaller than 10, so we should schedule the store for the mflr's def away from mflr. In epilogue, the expensive mtlr has no user for its def, so it doesn't matter that the load and the mtlr are back-to-back. Reviewed By: RolandF Differential Revision: https://reviews.llvm.org/D137423
68 lines
2.4 KiB
LLVM
68 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mcpu=pwr8 -ppc-asm-full-reg-names \
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; RUN: -mtriple=powerpc64le-unknown-unknown < %s | FileCheck %s
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define dso_local void @test(ptr nocapture %fp, i32 signext %Arg, i32 signext %Len) local_unnamed_addr #0 {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: mflr r0
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; CHECK-NEXT: .cfi_def_cfa_offset 64
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; CHECK-NEXT: .cfi_offset lr, 16
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; CHECK-NEXT: .cfi_offset r28, -32
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; CHECK-NEXT: .cfi_offset r29, -24
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; CHECK-NEXT: .cfi_offset r30, -16
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; CHECK-NEXT: std r28, -32(r1) # 8-byte Folded Spill
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; CHECK-NEXT: std r29, -24(r1) # 8-byte Folded Spill
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; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
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; CHECK-NEXT: stdu r1, -64(r1)
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; CHECK-NEXT: mr r29, r5
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; CHECK-NEXT: mr r30, r4
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; CHECK-NEXT: mr r28, r3
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; CHECK-NEXT: std r2, 24(r1)
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; CHECK-NEXT: std r0, 80(r1)
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; CHECK-NEXT: cmpwi r29, 1
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; CHECK-NEXT: bc 12, lt, .LBB0_3
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; CHECK-NEXT: # %bb.1: # %entry
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; CHECK-NEXT: cmpwi r30, 11
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; CHECK-NEXT: bc 12, lt, .LBB0_3
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; CHECK-NEXT: .p2align 5
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; CHECK-NEXT: .LBB0_2: # %for.body.us
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; CHECK-NEXT: #
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; CHECK-NEXT: mtctr r28
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; CHECK-NEXT: mr r3, r30
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; CHECK-NEXT: mr r12, r28
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; CHECK-NEXT: bctrl
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; CHECK-NEXT: ld 2, 24(r1)
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; CHECK-NEXT: addi r29, r29, -1
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; CHECK-NEXT: cmplwi r29, 0
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; CHECK-NEXT: bne cr0, .LBB0_2
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; CHECK-NEXT: .LBB0_3: # %for.cond.cleanup
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; CHECK-NEXT: mtctr r28
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; CHECK-NEXT: mr r3, r30
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; CHECK-NEXT: mr r12, r28
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; CHECK-NEXT: bctrl
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; CHECK-NEXT: ld 2, 24(r1)
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; CHECK-NEXT: addi r1, r1, 64
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; CHECK-NEXT: ld r0, 16(r1)
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; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
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; CHECK-NEXT: ld r29, -24(r1) # 8-byte Folded Reload
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; CHECK-NEXT: ld r28, -32(r1) # 8-byte Folded Reload
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; CHECK-NEXT: mtlr r0
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; CHECK-NEXT: blr
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entry:
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%cmp7 = icmp sgt i32 %Len, 0
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%cmp1 = icmp sgt i32 %Arg, 10
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%or.cond = and i1 %cmp7, %cmp1
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br i1 %or.cond, label %for.body.us, label %for.cond.cleanup
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for.body.us: ; preds = %entry, %for.body.us
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%i.08.us = phi i32 [ %inc.us, %for.body.us ], [ 0, %entry ]
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tail call void %fp(i32 signext %Arg) #1
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%inc.us = add nuw nsw i32 %i.08.us, 1
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%exitcond = icmp eq i32 %inc.us, %Len
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br i1 %exitcond, label %for.cond.cleanup, label %for.body.us
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for.cond.cleanup: ; preds = %for.body.us, %entry
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tail call void %fp(i32 signext %Arg) #1
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ret void
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}
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