43c1c59f73
With this patch we track aligned barriers in AAExecutionDomain and also delete unnecessary barriers there. This allows us to eliminate barriers across blocks, across functions, and in the presence of complex accesses that do not force a barrier. Further, we can use the collected information to enable store-load forwarding in a threaded environment (follow up patch). Differential Revision: https://reviews.llvm.org/D140463
92 lines
2.7 KiB
LLVM
92 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
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; REQUIRES: amdgpu-registered-target
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; RUN: opt -mtriple=amdgcn-amd-amdhsa -S -passes=openmp-opt < %s | FileCheck %s
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define internal void @outlined0() {
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; CHECK: Function Attrs: nounwind
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; CHECK-LABEL: define {{[^@]+}}@outlined0
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; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: call void @func() #[[ATTR1:[0-9]+]]
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; CHECK-NEXT: [[I:%.*]] = call i32 @__kmpc_get_hardware_num_threads_in_block() #[[ATTR0]]
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; CHECK-NEXT: ret void
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;
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bb:
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call void @func()
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%i = call i32 @__kmpc_get_hardware_num_threads_in_block()
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ret void
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}
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define internal void @func() {
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; CHECK: Function Attrs: nosync nounwind
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; CHECK-LABEL: define {{[^@]+}}@func
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; CHECK-SAME: () #[[ATTR1]] {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I:%.*]] = load ptr, ptr null, align 4294967296
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; CHECK-NEXT: store i64 0, ptr [[I]], align 8
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; CHECK-NEXT: ret void
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;
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bb:
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%i = load ptr, ptr addrspacecast (ptr addrspace(5) null to ptr), align 4294967296
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store i64 0, ptr %i, align 8
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ret void
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}
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define internal void @outlined1() {
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; CHECK: Function Attrs: nosync nounwind
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; CHECK-LABEL: define {{[^@]+}}@outlined1
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; CHECK-SAME: () #[[ATTR1]] {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[I:%.*]] = icmp sle i32 1, 0
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; CHECK-NEXT: br i1 [[I]], label [[BB1:%.*]], label [[BB2:%.*]]
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; CHECK: common.ret:
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; CHECK-NEXT: ret void
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; CHECK: bb1:
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; CHECK-NEXT: call void @func() #[[ATTR1]]
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: call void @__kmpc_free_shared(ptr null, i64 0) #[[ATTR0]]
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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bb:
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%i = icmp sle i32 1, 0
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br i1 %i, label %bb1, label %bb2
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common.ret: ; preds = %bb2, %bb1
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ret void
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bb1: ; preds = %bb
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call void @func()
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br label %common.ret
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bb2: ; preds = %bb
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call void @__kmpc_free_shared(ptr null, i64 0)
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br label %common.ret
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}
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define void @user() {
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; CHECK-LABEL: define {{[^@]+}}@user() {
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; CHECK-NEXT: call void @outlined0() #[[ATTR0]]
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; CHECK-NEXT: call void @outlined1() #[[ATTR1]]
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; CHECK-NEXT: ret void
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;
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call void @outlined0()
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call void @outlined1()
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ret void
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}
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declare i32 @__kmpc_get_hardware_num_threads_in_block()
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declare void @__kmpc_free_shared(ptr, i64)
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!llvm.module.flags = !{!0, !1}
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!0 = !{i32 7, !"openmp", i32 50}
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!1 = !{i32 7, !"openmp-device", i32 50}
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;.
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; CHECK: attributes #[[ATTR0]] = { nounwind }
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; CHECK: attributes #[[ATTR1]] = { nosync nounwind }
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;.
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; CHECK: [[META0:![0-9]+]] = !{i32 7, !"openmp", i32 50}
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; CHECK: [[META1:![0-9]+]] = !{i32 7, !"openmp-device", i32 50}
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;.
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