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
53 lines
1.7 KiB
LLVM
53 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr9 < %s | FileCheck %s
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%0 = type { double, [0 x %1] }
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%1 = type { i32 }
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@f = external dso_local thread_local local_unnamed_addr global %0, align 8
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@g = external dso_local local_unnamed_addr global i32, align 4
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; Function Attrs: nounwind
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define dso_local void @h() local_unnamed_addr #0 {
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; CHECK-LABEL: h:
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; CHECK: # %bb.0: # %bb
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: stdu 1, -64(1)
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; CHECK-NEXT: addis 3, 2, g@toc@ha
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; CHECK-NEXT: std 0, 80(1)
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; CHECK-NEXT: std 30, 48(1) # 8-byte Folded Spill
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; CHECK-NEXT: lwz 3, g@toc@l(3)
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; CHECK-NEXT: extswsli 30, 3, 2
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; CHECK-NEXT: addis 3, 2, f@got@tlsld@ha
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; CHECK-NEXT: addi 3, 3, f@got@tlsld@l
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; CHECK-NEXT: bl __tls_get_addr(f@tlsld)
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; CHECK-NEXT: nop
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; CHECK-NEXT: addis 3, 3, f@dtprel@ha
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; CHECK-NEXT: addi 3, 3, f@dtprel@l
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; CHECK-NEXT: add 3, 3, 30
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; CHECK-NEXT: lwz 3, 8(3)
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; CHECK-NEXT: cmplwi 3, 0
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; CHECK-NEXT: bne- 0, .LBB0_2
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; CHECK-NEXT: # %bb.1: # %bb6
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; CHECK-NEXT: ld 30, 48(1) # 8-byte Folded Reload
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; CHECK-NEXT: addi 1, 1, 64
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; CHECK-NEXT: ld 0, 16(1)
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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; CHECK-NEXT: .LBB0_2: # %bb5
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bb:
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%i = load i32, ptr @g, align 4
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%i1 = sext i32 %i to i64
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%i2 = getelementptr inbounds [0 x %1], ptr getelementptr inbounds (%0, ptr @f, i64 1, i32 0), i64 0, i64 %i1, i32 0
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%i3 = load i32, ptr %i2, align 4
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%i4 = icmp eq i32 %i3, 0
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br i1 %i4, label %bb6, label %bb5
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bb5: ; preds = %bb
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unreachable
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bb6: ; preds = %bb
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ret void
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}
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attributes #0 = { nounwind }
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