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
65 lines
1.9 KiB
LLVM
65 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=powerpc64le-unknown-linux-gnu -verify-machineinstrs\
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; RUN: -mcpu=pwr9 --ppc-enable-pipeliner --pipeliner-force-ii=4 2>&1 | FileCheck %s
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define void @main() nounwind #0 {
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; CHECK-LABEL: main:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: std 30, -16(1) # 8-byte Folded Spill
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; CHECK-NEXT: stdu 1, -48(1)
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; CHECK-NEXT: std 0, 64(1)
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; CHECK-NEXT: bl strtol
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; CHECK-NEXT: nop
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; CHECK-NEXT: mr 30, 3
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; CHECK-NEXT: bl calloc
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; CHECK-NEXT: nop
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; CHECK-NEXT: clrldi 4, 30, 32
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; CHECK-NEXT: li 5, 0
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; CHECK-NEXT: addi 3, 3, -4
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; CHECK-NEXT: mtctr 4
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; CHECK-NEXT: mullw 4, 5, 5
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; CHECK-NEXT: li 6, 1
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; CHECK-NEXT: bdz .LBB0_3
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: stwu 4, 4(3)
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; CHECK-NEXT: mullw 4, 6, 6
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; CHECK-NEXT: addi 5, 6, 1
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; CHECK-NEXT: bdz .LBB0_3
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; CHECK-NEXT: .p2align 4
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; CHECK-NEXT: .LBB0_2:
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; CHECK-NEXT: stwu 4, 4(3)
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; CHECK-NEXT: mullw 4, 5, 5
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; CHECK-NEXT: addi 5, 5, 1
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; CHECK-NEXT: bdnz .LBB0_2
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; CHECK-NEXT: .LBB0_3:
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; CHECK-NEXT: stwu 4, 4(3)
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; CHECK-NEXT: addi 1, 1, 48
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; CHECK-NEXT: ld 0, 16(1)
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; CHECK-NEXT: ld 30, -16(1) # 8-byte Folded Reload
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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%1 = tail call i64 @strtol()
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%2 = trunc i64 %1 to i32
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%3 = tail call noalias i8* @calloc()
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%4 = bitcast i8* %3 to i32*
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%5 = zext i32 %2 to i64
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br label %6
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6: ; preds = %6, %0
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%7 = phi i64 [ %11, %6 ], [ 0, %0 ]
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%8 = trunc i64 %7 to i32
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%9 = mul nsw i32 %8, %8
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%10 = getelementptr inbounds i32, i32* %4, i64 %7
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store i32 %9, i32* %10, align 4
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%11 = add nuw nsw i64 %7, 1
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%12 = icmp eq i64 %11, %5
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br i1 %12, label %13, label %6
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13: ; preds = %6
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ret void
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}
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declare i8* @calloc() local_unnamed_addr
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declare i64 @strtol() local_unnamed_addr
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