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[PGO][PGSO] Add profile guided size optimization to LegalizeDAG.

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Reviewers: davidxl

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D83333
This commit is contained in:
Hiroshi Yamauchi 2020-07-07 11:13:55 -07:00
parent 5fa0e72fe0
commit bd196de5cc
2 changed files with 36 additions and 1 deletions
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2
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -3319,7 +3319,7 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) {
// Check to see if this FP immediate is already legal.
// If this is a legal constant, turn it into a TargetConstantFP node.
if (!TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0),
DAG.getMachineFunction().getFunction().hasOptSize()))
DAG.shouldOptForSize()))
Results.push_back(ExpandConstantFP(CFP, true));
break;
}

35
test/CodeGen/AArch64/arm64-fp-imm-size.ll
View File

@ -38,3 +38,38 @@ define fp128 @baz() optsize {
; CHECK-NEXT: ret
ret fp128 0xL00000000000000000000000000000000
}
; CHECK: literal8
; CHECK: .quad 0x0000001fffffffd
define double @foo2_pgso() !prof !14 {
; CHECK: _foo2_pgso:
; CHECK: adrp x[[REG:[0-9]+]], lCPI4_0@PAGE
; CHECK: ldr d0, [x[[REG]], lCPI4_0@PAGEOFF]
; CHECK-NEXT: ret
ret double 0x1FFFFFFFd1
}
define float @bar_pgso() !prof !14 {
; CHECK: _bar_pgso:
; CHECK: adrp x[[REG:[0-9]+]], lCPI5_0@PAGE
; CHECK: ldr s0, [x[[REG]], lCPI5_0@PAGEOFF]
; CHECK-NEXT: ret
ret float 0x400921FB80000000
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
!2 = !{!"ProfileFormat", !"InstrProf"}
!3 = !{!"TotalCount", i64 10000}
!4 = !{!"MaxCount", i64 10}
!5 = !{!"MaxInternalCount", i64 1}
!6 = !{!"MaxFunctionCount", i64 1000}
!7 = !{!"NumCounts", i64 3}
!8 = !{!"NumFunctions", i64 3}
!9 = !{!"DetailedSummary", !10}
!10 = !{!11, !12, !13}
!11 = !{i32 10000, i64 100, i32 1}
!12 = !{i32 999000, i64 100, i32 1}
!13 = !{i32 999999, i64 1, i32 2}
!14 = !{!"function_entry_count", i64 0}