2bdfececef
After generated call for ctor/dtor for entry, global variable for ctor/dtor are useless. Remove them for non-lib profiles. Lib profile still need these in case export function used the global variable which require ctor/dtor. Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D133993
67 lines
1.7 KiB
HLSL
67 lines
1.7 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -std=hlsl202x -S -emit-llvm -disable-llvm-passes %s -o - | FileCheck %s --check-prefixes=CS,CHECK
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// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -std=hlsl202x -S -emit-llvm -disable-llvm-passes %s -o - | FileCheck %s --check-prefixes=LIB,CHECK
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// Make sure global variable for dtors exist for lib profile.
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// LIB:@llvm.global_dtors
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// Make sure global variable for dtors removed for compute profile.
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// CS-NOT:llvm.global_dtors
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struct Tail {
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Tail() {
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add(1);
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}
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~Tail() {
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add(-1);
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}
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void add(int V) {
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static int Count = 0;
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Count += V;
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}
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};
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struct Pupper {
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static int Count;
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Pupper() {
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Count += 1; // :)
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}
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~Pupper() {
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Count -= 1; // :(
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}
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} GlobalPup;
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void Wag() {
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static Tail T;
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T.add(0);
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}
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int Pupper::Count = 0;
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[numthreads(1,1,1)]
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void main(unsigned GI : SV_GroupIndex) {
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Wag();
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}
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// Make sure global variable for ctors/dtors removed.
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// CHECK-NOT:@llvm.global_ctors
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// CHECK-NOT:@llvm.global_dtors
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//CHECK: define void @main()
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//CHECK-NEXT: entry:
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//CHECK-NEXT: call void @_GLOBAL__sub_I_GlobalDestructors.hlsl()
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//CHECK-NEXT: %0 = call i32 @llvm.dx.flattened.thread.id.in.group()
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//CHECK-NEXT: call void @"?main@@YAXI@Z"(i32 %0)
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//CHECK-NEXT: call void @_GLOBAL__D_a()
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//CHECK-NEXT: ret void
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// This is really just a sanity check I needed for myself to verify that
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// function scope static variables also get destroyed properly.
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//CHECK: define internal void @_GLOBAL__D_a()
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//CHECK-NEXT: entry:
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//CHECK-NEXT: call void @"??1Tail@@QAA@XZ"(ptr @"?T@?1??Wag@@YAXXZ@4UTail@@A")
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//CHECK-NEXT: call void @"??1Pupper@@QAA@XZ"(ptr @"?GlobalPup@@3UPupper@@A")
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//CHECK-NEXT: ret void
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