2dc3b50987
Previously, functions named "main" got the NoRecurse attribute consistent with the behavior of C++, which HLSL largely follows. However, standard recursion is not allowed in HLSL, so all functions should really have this attribute. This doesn't prevent recursion, but rather signals that these functions aren't expected to recurse. Practically, this was done so that entry point functions named "main" would have all have the same attributes as otherwise identical entry points with other names. This required small changes to the this assignment tests because they no longer generate so many attribute sets since more of them match. related to #105244 but done to simplify testing for #89806
56 lines
2.5 KiB
HLSL
56 lines
2.5 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -emit-llvm -disable-llvm-passes -o - -std=hlsl202x %s | FileCheck %s
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struct Pair {
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int First;
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int Second;
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int getFirst() {
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Pair Another = {5, 10};
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this = Another;
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return this.First;
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}
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int getSecond() {
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this = Pair();
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return Second;
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}
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void operator=(Pair P) {
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First = P.First;
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Second = 2;
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}
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};
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[numthreads(1, 1, 1)]
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void main() {
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Pair Vals = {1, 2};
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Vals.First = Vals.getFirst();
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Vals.Second = Vals.getSecond();
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}
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// This test makes a probably safe assumption that HLSL 202x includes operator overloading for assignment operators.
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// CHECK: define linkonce_odr noundef i32 @"?getFirst@Pair@@QAAHXZ"(ptr noundef nonnull align 4 dereferenceable(8) %this) #0 align 2 {
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// CHECK-NEXT:entry:
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// CHECK-NEXT:%this.addr = alloca ptr, align 4
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// CHECK-NEXT:%Another = alloca %struct.Pair, align 4
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// CHECK-NEXT:%agg.tmp = alloca %struct.Pair, align 4
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// CHECK-NEXT:store ptr %this, ptr %this.addr, align 4
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// CHECK-NEXT:%this1 = load ptr, ptr %this.addr, align 4
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// CHECK-NEXT:%First = getelementptr inbounds nuw %struct.Pair, ptr %Another, i32 0, i32 0
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// CHECK-NEXT:store i32 5, ptr %First, align 4
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// CHECK-NEXT:%Second = getelementptr inbounds nuw %struct.Pair, ptr %Another, i32 0, i32 1
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// CHECK-NEXT:store i32 10, ptr %Second, align 4
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// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 4 %agg.tmp, ptr align 4 %Another, i32 8, i1 false)
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// CHECK-NEXT:call void @"??4Pair@@QAAXU0@@Z"(ptr noundef nonnull align 4 dereferenceable(8) %this1, ptr noundef byval(%struct.Pair) align 4 %agg.tmp)
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// CHECK-NEXT:%First2 = getelementptr inbounds nuw %struct.Pair, ptr %this1, i32 0, i32 0
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// CHECK-NEXT:%0 = load i32, ptr %First2, align 4
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// CHECK-NEXT:ret i32 %0
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// CHECK: define linkonce_odr noundef i32 @"?getSecond@Pair@@QAAHXZ"(ptr noundef nonnull align 4 dereferenceable(8) %this) #0 align 2 {
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// CHECK-NEXT:entry:
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// CHECK-NEXT:%this.addr = alloca ptr, align 4
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// CHECK-NEXT:%agg.tmp = alloca %struct.Pair, align 4
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// CHECK-NEXT:store ptr %this, ptr %this.addr, align 4
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// CHECK-NEXT:%this1 = load ptr, ptr %this.addr, align 4
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// CHECK-NEXT:call void @llvm.memset.p0.i32(ptr align 4 %agg.tmp, i8 0, i32 8, i1 false)
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// CHECK-NEXT:call void @"??4Pair@@QAAXU0@@Z"(ptr noundef nonnull align 4 dereferenceable(8) %this1, ptr noundef byval(%struct.Pair) align 4 %agg.tmp)
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// CHECK-NEXT:%Second = getelementptr inbounds nuw %struct.Pair, ptr %this1, i32 0, i32 1
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// CHECK-NEXT:%0 = load i32, ptr %Second, align 4
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// CHECK-NEXT:ret i32 %0
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