f95f3030e5
Constant buffers defined with the `cbuffer` keyword do not have a constructor. Instead, the call to initialize the resource handle based on its binding is generated in codegen. This change adds initialization of `cbuffer` handles that have implicit binding. Closes #139617
47 lines
1.8 KiB
HLSL
47 lines
1.8 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -emit-llvm -disable-llvm-passes %s -o - | FileCheck %s --check-prefixes=CHECK,NOINLINE
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// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -emit-llvm -O0 %s -o - | FileCheck %s --check-prefixes=CHECK,INLINE
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int i;
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__attribute__((constructor)) void call_me_first(void) {
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i = 12;
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}
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__attribute__((constructor)) void then_call_me(void) {
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i = 13;
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}
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__attribute__((destructor)) void call_me_last(void) {
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i = 0;
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}
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[numthreads(1,1,1)]
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void main(unsigned GI : SV_GroupIndex) {}
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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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// Verify function constructors are emitted
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// NOINLINE-NEXT: call void @_Z13call_me_firstv()
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// NOINLINE-NEXT: call void @_Z12then_call_mev()
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// NOINLINE-NEXT: call void @_GLOBAL__sub_I_GlobalConstructorFunction.hlsl()
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// NOINLINE-NEXT: %0 = call i32 @llvm.dx.flattened.thread.id.in.group()
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// NOINLINE-NEXT: call void @_Z4mainj(i32 %0)
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// NOINLINE-NEXT: call void @_Z12call_me_lastv(
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// NOINLINE-NEXT: ret void
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// Verify constructor calls are inlined when AlwaysInline is run
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// INLINE-NEXT: alloca
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// INLINE-NEXT: store i32 12
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// INLINE-NEXT: store i32 13
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// INLINE-NEXT: %[[HANDLE:.*]] = call target("dx.CBuffer", target("dx.Layout", %"__cblayout_$Globals", 4, 0))
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// INLINE-NEXT-SAME: @"llvm.dx.resource.handlefromimplicitbinding.tdx.CBuffer_tdx.Layout_s___cblayout_$Globalss_4_0tt"(i32 0, i32 0, i32 1, i32 0, i1 false)
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// INLINE-NEXT: store target("dx.CBuffer", target("dx.Layout", %"__cblayout_$Globals", 4, 0)) %[[HANDLE]], ptr @"$Globals.cb", align 4
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// INLINE-NEXT: %0 = call i32 @llvm.dx.flattened.thread.id.in.group()
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// INLINE-NEXT: store i32 %
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// INLINE-NEXT: store i32 0
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// INLINE: ret void
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