c4a60c9d34
This is an attempt to reland D42600 and enabling this optimisation by default. This also resolves the issue pointed out in the context of PGO build. Differential Revision: https://reviews.llvm.org/D42600
103 lines
3.9 KiB
LLVM
103 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
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; rdar://6522427
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; This command line used to crash due to dangling nodes left after PreprocessISelDAG
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -pre-RA-sched=linearize | FileCheck %s --check-prefix=pre-RA
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%"struct.clang::Action" = type { %"struct.clang::ActionBase" }
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%"struct.clang::ActionBase" = type { ptr }
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%"struct.clang::ActionBase::ActionResult<0u>" = type { ptr, i8 }
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@NumTrials = internal global i32 10000000 ; <ptr> [#uses=2]
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@llvm.used = appending global [1 x ptr] [ ptr @_Z25RawPointerPerformanceTestPvRN5clang6ActionE ], section "llvm.metadata" ; <ptr> [#uses=0]
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define void @_Z25RawPointerPerformanceTestPvRN5clang6ActionE(ptr %Val, ptr %Actions) nounwind {
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; CHECK-LABEL: _Z25RawPointerPerformanceTestPvRN5clang6ActionE:
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; CHECK: ## %bb.0: ## %entry
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; CHECK-NEXT: cmpl $0, _NumTrials(%rip)
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; CHECK-NEXT: je LBB0_4
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; CHECK-NEXT: ## %bb.1: ## %bb.nph
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: pushq %rbx
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; CHECK-NEXT: subq $24, %rsp
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; CHECK-NEXT: movq %rsi, %rbx
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; CHECK-NEXT: movq %rdi, %rax
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; CHECK-NEXT: xorl %ebp, %ebp
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: LBB0_2: ## %bb
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; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: movq (%rbx), %rcx
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; CHECK-NEXT: movq %rbx, %rdi
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; CHECK-NEXT: movq %rax, %rsi
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; CHECK-NEXT: callq *560(%rcx)
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; CHECK-NEXT: movq %rax, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: movq %rdx, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: incl %ebp
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; CHECK-NEXT: cmpl _NumTrials(%rip), %ebp
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; CHECK-NEXT: jb LBB0_2
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; CHECK-NEXT: ## %bb.3:
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; CHECK-NEXT: addq $24, %rsp
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: LBB0_4: ## %return
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; CHECK-NEXT: retq
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;
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; pre-RA-LABEL: _Z25RawPointerPerformanceTestPvRN5clang6ActionE:
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; pre-RA: ## %bb.0: ## %entry
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; pre-RA-NEXT: cmpl $0, _NumTrials(%rip)
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; pre-RA-NEXT: je LBB0_4
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; pre-RA-NEXT: ## %bb.1: ## %bb.nph
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; pre-RA-NEXT: pushq %rbp
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; pre-RA-NEXT: pushq %rbx
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; pre-RA-NEXT: subq $24, %rsp
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; pre-RA-NEXT: movq %rsi, %rbx
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; pre-RA-NEXT: movq %rdi, %rax
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; pre-RA-NEXT: xorl %ebp, %ebp
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; pre-RA-NEXT: .p2align 4, 0x90
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; pre-RA-NEXT: LBB0_2: ## %bb
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; pre-RA-NEXT: ## =>This Inner Loop Header: Depth=1
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; pre-RA-NEXT: movq (%rbx), %rcx
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; pre-RA-NEXT: movq %rbx, %rdi
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; pre-RA-NEXT: movq %rax, %rsi
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; pre-RA-NEXT: callq *560(%rcx)
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; pre-RA-NEXT: incl %ebp
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; pre-RA-NEXT: movq %rax, {{[0-9]+}}(%rsp)
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; pre-RA-NEXT: movq %rdx, {{[0-9]+}}(%rsp)
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; pre-RA-NEXT: cmpl _NumTrials(%rip), %ebp
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; pre-RA-NEXT: jb LBB0_2
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; pre-RA-NEXT: ## %bb.3:
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; pre-RA-NEXT: addq $24, %rsp
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; pre-RA-NEXT: popq %rbx
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; pre-RA-NEXT: popq %rbp
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; pre-RA-NEXT: LBB0_4: ## %return
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; pre-RA-NEXT: retq
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entry:
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%i = alloca %"struct.clang::ActionBase::ActionResult<0u>", align 8
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%i1 = load i32, ptr @NumTrials, align 4
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%i2 = icmp eq i32 %i1, 0
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br i1 %i2, label %return, label %bb.nph
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bb.nph: ; preds = %entry
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%mrv_gep1 = getelementptr %"struct.clang::ActionBase::ActionResult<0u>", ptr %i, i64 0, i32 1
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br label %bb
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bb: ; preds = %bb, %bb.nph
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%Trial.01 = phi i32 [ 0, %bb.nph ], [ %i12, %bb ]
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%Val_addr.02 = phi ptr [ %Val, %bb.nph ], [ %i11, %bb ]
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%i6 = load ptr, ptr %Actions, align 8
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%i7 = getelementptr ptr, ptr %i6, i64 70
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%i8 = load ptr, ptr %i7, align 8
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%i10 = call { i64, i64 } %i8(ptr %Actions, ptr %Val_addr.02) #0
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%mrv_gr = extractvalue { i64, i64 } %i10, 0
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store i64 %mrv_gr, ptr %i, align 4
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%mrv_gr2 = extractvalue { i64, i64 } %i10, 1
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store i64 %mrv_gr2, ptr %mrv_gep1, align 4
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%i11 = load ptr, ptr %i, align 8
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%i12 = add i32 %Trial.01, 1
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%i13 = load i32, ptr @NumTrials, align 4
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%i14 = icmp ult i32 %i12, %i13
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br i1 %i14, label %bb, label %return
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return: ; preds = %bb, %entry
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ret void
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}
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