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llvm-project/llvm/test/Transforms/PhaseOrdering/X86/SROA-after-loop-unrolling.ll
Arthur Eubanks 6699029b67 [NewPM][opt] Run the "default" AA pipeline by default 
We tend to assume that the AA pipeline is by default the default AA
pipeline and it's confusing when it's empty instead.

PR48779

Initially reverted due to BasicAA running analyses in an unspecified
order (multiple function calls as parameters), fixed by fetching
analyses before the call to construct BasicAA.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D95117
2021-01-21 21:08:54 -08:00

203 lines
7.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -O3 -S | FileCheck %s
; RUN: opt < %s -passes='default<O3>' -S | FileCheck %s
; This is based on the following most basic C++ code:
;
; #include <array>
; void use(int);
; void foo(int cnt) {
; std::array<int, 6> arr;
; for(int& elt : arr)
; elt = ++cnt;
; for(int& elt : arr)
; use(elt);
; }
;
; Not only should the loops be unrolled, no alloca's should be left there.
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%"struct.std::array" = type { [6 x i32] }
define dso_local void @_Z3fooi(i32 %cnt) {
; CHECK-LABEL: @_Z3fooi(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[CNT:%.*]], 1
; CHECK-NEXT: [[INC_1:%.*]] = add nsw i32 [[CNT]], 2
; CHECK-NEXT: [[INC_2:%.*]] = add nsw i32 [[CNT]], 3
; CHECK-NEXT: [[INC_3:%.*]] = add nsw i32 [[CNT]], 4
; CHECK-NEXT: [[INC_4:%.*]] = add nsw i32 [[CNT]], 5
; CHECK-NEXT: [[INC_5:%.*]] = add nsw i32 [[CNT]], 6
; CHECK-NEXT: call void @_Z3usei(i32 [[INC]])
; CHECK-NEXT: call void @_Z3usei(i32 [[INC_1]])
; CHECK-NEXT: call void @_Z3usei(i32 [[INC_2]])
; CHECK-NEXT: call void @_Z3usei(i32 [[INC_3]])
; CHECK-NEXT: call void @_Z3usei(i32 [[INC_4]])
; CHECK-NEXT: call void @_Z3usei(i32 [[INC_5]])
; CHECK-NEXT: ret void
;
entry:
%cnt.addr = alloca i32
%arr = alloca %"struct.std::array"
%__range1 = alloca %"struct.std::array"*
%__begin1 = alloca i32*
%__end1 = alloca i32*
%elt = alloca i32*
%__range12 = alloca %"struct.std::array"*
%__begin13 = alloca i32*
%__end15 = alloca i32*
%elt11 = alloca i32*
store i32 %cnt, i32* %cnt.addr
%0 = bitcast %"struct.std::array"* %arr to i8*
call void @llvm.lifetime.start.p0i8(i64 24, i8* %0)
%1 = bitcast %"struct.std::array"** %__range1 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %1)
store %"struct.std::array"* %arr, %"struct.std::array"** %__range1
%2 = bitcast i32** %__begin1 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %2)
%3 = load %"struct.std::array"*, %"struct.std::array"** %__range1
%call = call i32* @_ZNSt5arrayIiLm6EE5beginEv(%"struct.std::array"* %3)
store i32* %call, i32** %__begin1
%4 = bitcast i32** %__end1 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %4)
%5 = load %"struct.std::array"*, %"struct.std::array"** %__range1
%call1 = call i32* @_ZNSt5arrayIiLm6EE3endEv(%"struct.std::array"* %5)
store i32* %call1, i32** %__end1
br label %for.cond
for.cond:
%6 = load i32*, i32** %__begin1
%7 = load i32*, i32** %__end1
%cmp = icmp ne i32* %6, %7
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup:
%8 = bitcast i32** %__end1 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %8)
%9 = bitcast i32** %__begin1 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %9)
%10 = bitcast %"struct.std::array"** %__range1 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %10)
br label %for.end
for.body:
%11 = bitcast i32** %elt to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %11)
%12 = load i32*, i32** %__begin1
store i32* %12, i32** %elt
%13 = load i32, i32* %cnt.addr
%inc = add nsw i32 %13, 1
store i32 %inc, i32* %cnt.addr
%14 = load i32*, i32** %elt
store i32 %inc, i32* %14
%15 = bitcast i32** %elt to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %15)
br label %for.inc
for.inc:
%16 = load i32*, i32** %__begin1
%incdec.ptr = getelementptr inbounds i32, i32* %16, i32 1
store i32* %incdec.ptr, i32** %__begin1
br label %for.cond
for.end:
%17 = bitcast %"struct.std::array"** %__range12 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %17)
store %"struct.std::array"* %arr, %"struct.std::array"** %__range12
%18 = bitcast i32** %__begin13 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %18)
%19 = load %"struct.std::array"*, %"struct.std::array"** %__range12
%call4 = call i32* @_ZNSt5arrayIiLm6EE5beginEv(%"struct.std::array"* %19)
store i32* %call4, i32** %__begin13
%20 = bitcast i32** %__end15 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %20)
%21 = load %"struct.std::array"*, %"struct.std::array"** %__range12
%call6 = call i32* @_ZNSt5arrayIiLm6EE3endEv(%"struct.std::array"* %21)
store i32* %call6, i32** %__end15
br label %for.cond7
for.cond7:
%22 = load i32*, i32** %__begin13
%23 = load i32*, i32** %__end15
%cmp8 = icmp ne i32* %22, %23
br i1 %cmp8, label %for.body10, label %for.cond.cleanup9
for.cond.cleanup9:
%24 = bitcast i32** %__end15 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %24)
%25 = bitcast i32** %__begin13 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %25)
%26 = bitcast %"struct.std::array"** %__range12 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %26)
br label %for.end14
for.body10:
%27 = bitcast i32** %elt11 to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %27)
%28 = load i32*, i32** %__begin13
store i32* %28, i32** %elt11
%29 = load i32*, i32** %elt11
%30 = load i32, i32* %29
call void @_Z3usei(i32 %30)
%31 = bitcast i32** %elt11 to i8*
call void @llvm.lifetime.end.p0i8(i64 8, i8* %31)
br label %for.inc12
for.inc12:
%32 = load i32*, i32** %__begin13
%incdec.ptr13 = getelementptr inbounds i32, i32* %32, i32 1
store i32* %incdec.ptr13, i32** %__begin13
br label %for.cond7
for.end14:
%33 = bitcast %"struct.std::array"* %arr to i8*
call void @llvm.lifetime.end.p0i8(i64 24, i8* %33)
ret void
}
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
define linkonce_odr dso_local i32* @_ZNSt5arrayIiLm6EE5beginEv(%"struct.std::array"* %this) {
entry:
%this.addr = alloca %"struct.std::array"*
store %"struct.std::array"* %this, %"struct.std::array"** %this.addr
%this1 = load %"struct.std::array"*, %"struct.std::array"** %this.addr
%call = call i32* @_ZNSt5arrayIiLm6EE4dataEv(%"struct.std::array"* %this1)
ret i32* %call
}
define linkonce_odr dso_local i32* @_ZNSt5arrayIiLm6EE3endEv(%"struct.std::array"* %this) {
entry:
%this.addr = alloca %"struct.std::array"*
store %"struct.std::array"* %this, %"struct.std::array"** %this.addr
%this1 = load %"struct.std::array"*, %"struct.std::array"** %this.addr
%call = call i32* @_ZNSt5arrayIiLm6EE4dataEv(%"struct.std::array"* %this1)
%add.ptr = getelementptr inbounds i32, i32* %call, i64 6
ret i32* %add.ptr
}
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
declare dso_local void @_Z3usei(i32)
define linkonce_odr dso_local i32* @_ZNSt5arrayIiLm6EE4dataEv(%"struct.std::array"* %this) {
entry:
%this.addr = alloca %"struct.std::array"*
store %"struct.std::array"* %this, %"struct.std::array"** %this.addr
%this1 = load %"struct.std::array"*, %"struct.std::array"** %this.addr
%_M_elems = getelementptr inbounds %"struct.std::array", %"struct.std::array"* %this1, i32 0, i32 0
%call = call i32* @_ZNSt14__array_traitsIiLm6EE6_S_ptrERA6_Ki([6 x i32]* nonnull align 4 dereferenceable(24) %_M_elems)
ret i32* %call
}
define linkonce_odr dso_local i32* @_ZNSt14__array_traitsIiLm6EE6_S_ptrERA6_Ki([6 x i32]* nonnull align 4 dereferenceable(24) %__t) {
entry:
%__t.addr = alloca [6 x i32]*
store [6 x i32]* %__t, [6 x i32]** %__t.addr
%0 = load [6 x i32]*, [6 x i32]** %__t.addr
%arraydecay = getelementptr inbounds [6 x i32], [6 x i32]* %0, i64 0, i64 0
ret i32* %arraydecay
}
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