[clang] [HLSL] get inout/out ABI for array parameters working (PR #111047)

[Greg Roth via cfe-commits]

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@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -disable-llvm-passes -emit-llvm -finclude-default-header -o - %s | FileCheck %s
+
+// CHECK-LABEL: increment
+void increment(inout int Arr[2]) {
+  for (int I = 0; I < 2; I++)
+    Arr[0] += 2;
+}
+
+// CHECK-LABEL: call
+// CHECK: [[A:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: [[Tmp:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: [[Tmp2:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[A]], ptr align 4 @{{.*}}, i32 8, i1 false)
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp]], ptr align 4 [[A]], i32 8, i1 false)
+// CHECK-NEXT: store ptr [[Tmp]], ptr [[Tmp2]], align 4
+// CHECK-NEXT: call void @"?increment{{.*}}(ptr noalias noundef byval([2 x i32]) align 4 [[Tmp2]]) #3
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pow2clk wrote:

I'm afraid this change #111632 will cause these mangles to change and this test to fail. Just a note in case the order of things results in that change going in between when this one is last tested and when it's submitted.

https://github.com/llvm/llvm-project/pull/111047