a3bd87b100
Summary:
The AMDGPU backend uses the linker-provided INIT_ARRAY and FINI_ARRAY
sections to call all the global constructors in a single kernel.
Previously this mistakenly used the same iteration logic for both
arrays. The destructors stored in FINI_ARRAY are stored in the same
order as
the ones in the INIT_ARRAY section so we need to traverse it in reverse
order.
Relanding after the revert in fe7b5e2cfc
using the IR builder interface instead of ConstantExpr.
88 lines
3.9 KiB
LLVM
88 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs --version 3
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; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-ctor-dtor < %s | FileCheck %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx700 -filetype=obj -o - < %s | llvm-readelf -s - 2>&1 | FileCheck %s -check-prefix=CHECK-VIS
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@llvm.global_ctors = appending addrspace(1) global [2 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 1, ptr @foo, ptr null }, { i32, ptr, ptr } { i32 1, ptr @foo.5, ptr null }]
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@llvm.global_dtors = appending addrspace(1) global [2 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 1, ptr @bar, ptr null }, { i32, ptr, ptr } { i32 1, ptr @bar.5, ptr null }]
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; UTC_ARGS: --disable
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; CHECK: @__init_array_start = external addrspace(1) constant [0 x ptr addrspace(1)]
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; CHECK: @__init_array_end = external addrspace(1) constant [0 x ptr addrspace(1)]
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; CHECK: @__fini_array_start = external addrspace(1) constant [0 x ptr addrspace(1)]
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; CHECK: @__fini_array_end = external addrspace(1) constant [0 x ptr addrspace(1)]
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; CHECK: @llvm.used = appending addrspace(1) global [2 x ptr] [ptr @amdgcn.device.init, ptr @amdgcn.device.fini]
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; UTC_ARGS: --enable
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; CHECK-VIS: FUNC WEAK PROTECTED {{.*}} amdgcn.device.init
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; CHECK-VIS: OBJECT WEAK DEFAULT {{.*}} amdgcn.device.init.kd
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; CHECK-VIS: FUNC WEAK PROTECTED {{.*}} amdgcn.device.fini
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; CHECK-VIS: OBJECT WEAK DEFAULT {{.*}} amdgcn.device.fini.kd
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define internal void @foo() {
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ret void
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}
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define internal void @bar() {
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ret void
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}
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define internal void @foo.5() {
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ret void
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}
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define internal void @bar.5() {
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ret void
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}
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; CHECK-LABEL: define internal void @foo() {
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define internal void @bar() {
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define internal void @foo.5() {
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define internal void @bar.5() {
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define weak_odr amdgpu_kernel void @amdgcn.device.init(
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; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 icmp ne (ptr addrspace(1) @__init_array_start, ptr addrspace(1) @__init_array_end), label [[WHILE_ENTRY:%.*]], label [[WHILE_END:%.*]]
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; CHECK: while.entry:
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; CHECK-NEXT: [[PTR:%.*]] = phi ptr addrspace(1) [ @__init_array_start, [[ENTRY:%.*]] ], [ [[NEXT:%.*]], [[WHILE_ENTRY]] ]
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; CHECK-NEXT: [[CALLBACK:%.*]] = load ptr, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: call void [[CALLBACK]]()
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; CHECK-NEXT: [[NEXT]] = getelementptr ptr addrspace(1), ptr addrspace(1) [[PTR]], i64 1
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; CHECK-NEXT: [[END:%.*]] = icmp eq ptr addrspace(1) [[NEXT]], @__init_array_end
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; CHECK-NEXT: br i1 [[END]], label [[WHILE_END]], label [[WHILE_ENTRY]]
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; CHECK: while.end:
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define weak_odr amdgpu_kernel void @amdgcn.device.fini(
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; CHECK-SAME: ) #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = ashr i64 sub (i64 ptrtoint (ptr addrspace(1) @__fini_array_end to i64), i64 ptrtoint (ptr addrspace(1) @__fini_array_start to i64)), 3
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[TMP0]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds [0 x ptr], ptr addrspace(1) @__fini_array_start, i64 0, i64 [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = icmp uge ptr addrspace(1) [[TMP2]], @__fini_array_start
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; CHECK-NEXT: br i1 [[TMP3]], label [[WHILE_ENTRY:%.*]], label [[WHILE_END:%.*]]
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; CHECK: while.entry:
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; CHECK-NEXT: [[PTR:%.*]] = phi ptr addrspace(1) [ [[TMP2]], [[ENTRY:%.*]] ], [ [[NEXT:%.*]], [[WHILE_ENTRY]] ]
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; CHECK-NEXT: [[CALLBACK:%.*]] = load ptr, ptr addrspace(1) [[PTR]], align 8
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; CHECK-NEXT: call void [[CALLBACK]]()
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; CHECK-NEXT: [[NEXT]] = getelementptr ptr addrspace(1), ptr addrspace(1) [[PTR]], i64 -1
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; CHECK-NEXT: [[END:%.*]] = icmp ult ptr addrspace(1) [[NEXT]], @__fini_array_start
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; CHECK-NEXT: br i1 [[END]], label [[WHILE_END]], label [[WHILE_ENTRY]]
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; CHECK: while.end:
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; CHECK-NEXT: ret void
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;
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