xref: /llvm-project/llvm/test/CodeGen/SPIRV/transcoding/bitcast.ll (revision 0a443f13b49b3f392461a0bb60b0146cfc4607c7)
1; RUN: llc -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
2; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
3
4;; Check the bitcast is translated back to bitcast
5
6; CHECK: Bitcast
7
8define spir_kernel void @test_fn(<2 x i8> addrspace(1)* nocapture readonly %src, i16 addrspace(1)* nocapture %dst) {
9entry:
10  %call = tail call spir_func i64 @_Z13get_global_idj(i32 0)
11  %sext = shl i64 %call, 32
12  %idxprom = ashr exact i64 %sext, 32
13  %arrayidx = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(1)* %src, i64 %idxprom
14  %0 = load <2 x i8>, <2 x i8> addrspace(1)* %arrayidx, align 2
15  %astype = bitcast <2 x i8> %0 to i16
16  %arrayidx2 = getelementptr inbounds i16, i16 addrspace(1)* %dst, i64 %idxprom
17  store i16 %astype, i16 addrspace(1)* %arrayidx2, align 2
18  ret void
19}
20
21declare spir_func i64 @_Z13get_global_idj(i32)
22