From 54ff7fd879e71f51ed3c0fda16224cbbcf0831eb Mon Sep 17 00:00:00 2001
From: kaizhangNV <149626564+kaizhangNV@users.noreply.github.com>
Date: Mon, 12 May 2025 15:32:25 -0500
Subject: Ensure to emit 32-bit type for bitfield operations for SPIRV (#7046)

Close #7014
---
 .../bitfield-insert-extract-non32bit.slang         | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 tests/language-feature/bitfield/bitfield-insert-extract-non32bit.slang

(limited to 'tests')

diff --git a/tests/language-feature/bitfield/bitfield-insert-extract-non32bit.slang b/tests/language-feature/bitfield/bitfield-insert-extract-non32bit.slang
new file mode 100644
index 000000000..0edbb049a
--- /dev/null
+++ b/tests/language-feature/bitfield/bitfield-insert-extract-non32bit.slang
@@ -0,0 +1,38 @@
+//TEST:COMPARE_COMPUTE(filecheck-buffer=BUF): -vk -output-using-type
+//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int32_t> outputBuffer;
+
+//TEST_INPUT:set input = ubuffer(data=[0xC0A0], stride=4)
+RWStructuredBuffer<uint32_t> input;
+
+[shader("compute")]
+[numthreads(1, 1, 1)]
+void computeMain(
+    uint3 tid : SV_DispatchThreadID)
+{
+    uint16_t a = uint16_t(input[0] & 0xFFFF);
+    int16_t b = bit_cast<int16_t>(a);
+
+    outputBuffer[0] = bitfieldExtract(a, 14, 2);
+    outputBuffer[1] = bitfieldExtract(b, 13, 3);    // 0b110, with sign extend, it will be 0xFFFFFFFE => -2
+    // BUF: 3
+    // BUF: -2
+
+    uint8_t c = uint8_t(input[0] & 0xFF);
+    int8_t d = bit_cast<int8_t>(c);
+
+    outputBuffer[2] = bitfieldExtract(c, 5, 3);     // b101 = 5
+    outputBuffer[3] = bitfieldExtract(d, 5, 3);     // 0b101, with sign extend, it will be 0xFFFFFFFD => -3
+    // BUF: 5
+    // BUF: -3
+
+    outputBuffer[4] = bitfieldInsert(a, 0x03U, 8, 2);   // 0xC3A0 = 50080 (unsigned)
+    outputBuffer[5] = bitfieldInsert(b, 0x03,  8, 2);    // 0xC3A0 = -15456 (signed)
+    // BUF: 50080
+    // BUF: -15456
+
+    outputBuffer[6] = bitfieldInsert(c, 0x03U, 3, 2);   // 0xB8 = 184  (unsigned)
+    outputBuffer[7] = bitfieldInsert(d, 0x03,  3, 2);    // 0xB8 = -72 (signed)
+    // BUF: 184
+    // BUF: -72
+}
-- 
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