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clang-p2996/llvm/test/Transforms/OpenMP/deduplication.ll
Johannes Doerfert 396b725394 [OpenMP][Opt] Combine struct ident_t* during deduplication 
If we deduplicate OpenMP runtime calls we have multiple `ident_t*` that
represent information like source location. So far, we simply kept the
one used by the replacement call. However, as exposed by PR44893, that
can cause problems if we have stack allocated `ident_t` objects. While
we need to revisit the use of these as well, it is clear that we
eventually want to merge source location information in some way. With
this patch we add the infrastructure to do so but without doing the
actual merge. Instead we pick a global `ident_t` from the replaced
calls, if possible, or create a new one with an unknown location
instead.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D74925
2020-02-25 14:07:14 -08:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt -openmpopt -S < %s | FileCheck %s
; RUN: opt -passes=openmpopt -S < %s | FileCheck %s
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
%struct.ident_t = type { i32, i32, i32, i32, i8* }
@0 = private unnamed_addr global %struct.ident_t { i32 0, i32 34, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str0, i32 0, i32 0) }, align 8
@1 = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str1, i32 0, i32 0) }, align 8
@2 = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str2, i32 0, i32 0) }, align 8
@.str0 = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00", align 1
@.str1 = private unnamed_addr constant [23 x i8] c";file001;loc0001;0;0;;\00", align 1
@.str2 = private unnamed_addr constant [23 x i8] c";file002;loc0002;0;0;;\00", align 1
; UTC_ARGS: --disable
; CHECK-DAG: @0 = private unnamed_addr global %struct.ident_t { i32 0, i32 34, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str0, i32 0, i32 0) }, align 8
; CHECK-DAG: @1 = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str1, i32 0, i32 0) }, align 8
; CHECK-DAG: @2 = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str2, i32 0, i32 0) }, align 8
; CHECK-DAG: @.str0 = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00", align 1
; CHECK-DAG: @.str1 = private unnamed_addr constant [23 x i8] c";file001;loc0001;0;0;;\00", align 1
; CHECK-DAG: @.str2 = private unnamed_addr constant [23 x i8] c";file002;loc0002;0;0;;\00", align 1
; CHECK-DAG: @3 = private unnamed_addr global %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str0, i32 0, i32 0) }, align 8
; UTC_ARGS: --enable
declare i32 @__kmpc_global_thread_num(%struct.ident_t*)
declare void @useI32(i32)
define void @external(i1 %c) {
; CHECK-LABEL: define {{[^@]+}}@external
; CHECK-SAME: (i1 [[C:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C2:%.*]] = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[E:%.*]]
; CHECK: t:
; CHECK-NEXT: call void @internal(i32 [[C2]], i32 [[C2]])
; CHECK-NEXT: call void @useI32(i32 [[C2]])
; CHECK-NEXT: br label [[M:%.*]]
; CHECK: e:
; CHECK-NEXT: call void @internal(i32 [[C2]], i32 [[C2]])
; CHECK-NEXT: call void @useI32(i32 [[C2]])
; CHECK-NEXT: br label [[M]]
; CHECK: m:
; CHECK-NEXT: call void @internal(i32 0, i32 [[C2]])
; CHECK-NEXT: call void @useI32(i32 [[C2]])
; CHECK-NEXT: ret void
;
entry:
br i1 %c, label %t, label %e
t:
%c0 = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
call void @internal(i32 %c0, i32 %c0)
call void @useI32(i32 %c0)
br label %m
e:
%c1 = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
call void @internal(i32 %c1, i32 %c1)
call void @useI32(i32 %c1)
br label %m
m:
%c2 = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
call void @internal(i32 0, i32 %c2)
call void @useI32(i32 %c2)
ret void
}
define internal void @internal(i32 %not_gtid, i32 %gtid) {
; CHECK-LABEL: define {{[^@]+}}@internal
; CHECK-SAME: (i32 [[NOT_GTID:%.*]], i32 [[GTID:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[GTID]], [[GTID]]
; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[E:%.*]]
; CHECK: t:
; CHECK-NEXT: call void @useI32(i32 [[GTID]])
; CHECK-NEXT: call void @external(i1 [[C]])
; CHECK-NEXT: br label [[M:%.*]]
; CHECK: e:
; CHECK-NEXT: call void @useI32(i32 [[GTID]])
; CHECK-NEXT: br label [[M]]
; CHECK: m:
; CHECK-NEXT: call void @useI32(i32 [[GTID]])
; CHECK-NEXT: ret void
;
entry:
%cc = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
%c = icmp eq i32 %cc, %gtid
br i1 %c, label %t, label %e
t:
%c0 = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
call void @useI32(i32 %c0)
call void @external(i1 %c)
br label %m
e:
%c1 = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
call void @useI32(i32 %c1)
br label %m
m:
%c2 = tail call i32 @__kmpc_global_thread_num(%struct.ident_t* nonnull @0)
call void @useI32(i32 %c2)
ret void
}
define void @local_and_global_gtid_calls() {
; CHECK-LABEL: define {{[^@]+}}@local_and_global_gtid_calls()
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TID5:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2)
; CHECK-NEXT: [[DOTKMPC_LOC_ADDR:%.*]] = alloca [[STRUCT_IDENT_T:%.*]], align 8
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: ret void
;
entry:
%.kmpc_loc.addr = alloca %struct.ident_t, align 8
%tid0 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr)
%tid1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @1)
%tid2 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr)
call void @useI32(i32 %tid0)
call void @useI32(i32 %tid1)
call void @useI32(i32 %tid2)
%tid3 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr)
%tid4 = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2)
%tid5 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr)
call void @useI32(i32 %tid3)
call void @useI32(i32 %tid4)
call void @useI32(i32 %tid5)
ret void
}
define void @local_gtid_calls_only() {
; CHECK-LABEL: define {{[^@]+}}@local_gtid_calls_only()
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TID5:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @3)
; CHECK-NEXT: [[DOTKMPC_LOC_ADDR1:%.*]] = alloca [[STRUCT_IDENT_T:%.*]], align 8
; CHECK-NEXT: [[DOTKMPC_LOC_ADDR2:%.*]] = alloca [[STRUCT_IDENT_T]], align 8
; CHECK-NEXT: [[DOTKMPC_LOC_ADDR3:%.*]] = alloca [[STRUCT_IDENT_T]], align 8
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: ret void
;
entry:
%.kmpc_loc.addr1 = alloca %struct.ident_t, align 8
%.kmpc_loc.addr2 = alloca %struct.ident_t, align 8
%.kmpc_loc.addr3 = alloca %struct.ident_t, align 8
%tid0 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr1)
%tid1 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr2)
%tid2 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr3)
call void @useI32(i32 %tid0)
call void @useI32(i32 %tid1)
call void @useI32(i32 %tid2)
%tid3 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr1)
%tid4 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr2)
%tid5 = call i32 @__kmpc_global_thread_num(%struct.ident_t* %.kmpc_loc.addr3)
call void @useI32(i32 %tid3)
call void @useI32(i32 %tid4)
call void @useI32(i32 %tid5)
ret void
}
declare i32 @omp_get_level()
define void @local_and_global_glvl_calls() {
; CHECK-LABEL: define {{[^@]+}}@local_and_global_glvl_calls()
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TID5:%.*]] = call i32 @omp_get_level()
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: ret void
;
entry:
%tid0 = call i32 @omp_get_level()
%tid1 = call i32 @omp_get_level()
%tid2 = call i32 @omp_get_level()
call void @useI32(i32 %tid0)
call void @useI32(i32 %tid1)
call void @useI32(i32 %tid2)
%tid3 = call i32 @omp_get_level()
%tid4 = call i32 @omp_get_level()
%tid5 = call i32 @omp_get_level()
call void @useI32(i32 %tid3)
call void @useI32(i32 %tid4)
call void @useI32(i32 %tid5)
ret void
}
define void @local_glvl_calls_only() {
; CHECK-LABEL: define {{[^@]+}}@local_glvl_calls_only()
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TID5:%.*]] = call i32 @omp_get_level()
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: call void @useI32(i32 [[TID5]])
; CHECK-NEXT: ret void
;
entry:
%tid0 = call i32 @omp_get_level()
%tid1 = call i32 @omp_get_level()
%tid2 = call i32 @omp_get_level()
call void @useI32(i32 %tid0)
call void @useI32(i32 %tid1)
call void @useI32(i32 %tid2)
%tid3 = call i32 @omp_get_level()
%tid4 = call i32 @omp_get_level()
%tid5 = call i32 @omp_get_level()
call void @useI32(i32 %tid3)
call void @useI32(i32 %tid4)
call void @useI32(i32 %tid5)
ret void
}
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