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Allow unsigned as a full type #6885

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Allow unsigned as a full type #6885

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67a8347
Allow unsigned as a full type
pow2clk Aug 27, 2024
8b27043
clang-format
pow2clk Aug 28, 2024
a5a55c6
Revert part of change
pow2clk Sep 3, 2024
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8 changes: 3 additions & 5 deletions tools/clang/lib/Sema/DeclSpec.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1051,13 +1051,11 @@ void DeclSpec::Finish(DiagnosticsEngine &D, Preprocessor &PP, const PrintingPoli

// signed/unsigned are only valid with int/char/wchar_t.
if (TypeSpecSign != TSS_unspecified) {
// HLSL Change starts - signed/unsigned are not complete type specifiers.
#if 0
if (TypeSpecType == TST_unspecified)
TypeSpecType = TST_int;
#endif
// shorthand vectors and matrices can have signed/unsigned specifiers.
// If other typenames are used with signed/unsigned, it is already diagnosed by hlsl external source
// HLSL Change starts - shorthand vectors and matrices can have
// signed/unsigned specifiers. If other typenames are used with
// signed/unsigned, it is already diagnosed by hlsl external source
if (TypeSpecType != TST_int && TypeSpecType != TST_int128 &&
TypeSpecType != TST_char && TypeSpecType != TST_wchar &&
TypeSpecType != TST_typename) {
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27 changes: 27 additions & 0 deletions tools/clang/test/CodeGenHLSL/unsigned-int.hlsl
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@@ -0,0 +1,27 @@
// RUN: %dxc -fcgl -T vs_6_0 %s | FileCheck %s

// Test that unsigned alone is accepted and equivalent to an unsigned int

// CHECK: @"\01?g_u@@3IB" = external constant i32, align 4
unsigned g_u;

// CHECK: @"\01?buf_u@@3V?$RWBuffer@I@@A" = external global %"class.RWBuffer<unsigned int>", align 4
// CHECK: @"\01?sbuf_u@@3V?$RWStructuredBuffer@I@@A" = external global %"class.RWStructuredBuffer<unsigned int>", align 4
RWBuffer<uint> buf_u;
RWStructuredBuffer<unsigned> sbuf_u;
RWByteAddressBuffer bab_u;

unsigned doit(uint i, unsigned j);

float4 main(unsigned VID : SV_VertexID, unsigned IID : SV_InstanceID) : SV_Position {
uint i = g_u;
// CHECK: %call = call i32 @"\01?doit@@YAIII@Z"(i32 %{{[0-9]+}}, i32 %{{[0-9]+}})
buf_u[0] = doit(VID, i);
sbuf_u[0] = doit(IID, bab_u.Load<unsigned>(0));
return doit(buf_u[1], sbuf_u[1]);
}

// CHECK: define internal i32 @"\01?doit@@YAIII@Z"(i32 %i, i32 %j)
unsigned doit(uint i, unsigned j) {
return i + j;
}
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