43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
; RUN: llc -mtriple=amdgcn -stop-after=amdgpu-isel < %s | FileCheck -check-prefix=GCN %s
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; GCN-LABEL: name: uniform_bitreverse_i32
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; GCN: S_BREV_B32
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define amdgpu_kernel void @uniform_bitreverse_i32(i32 %val, ptr addrspace(1) %out) {
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%res = call i32 @llvm.bitreverse.i32(i32 %val)
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store i32 %res, ptr addrspace(1) %out
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ret void
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}
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; GCN-LABEL: name: divergent_bitreverse_i32
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; GCN: V_BFREV_B32
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define amdgpu_kernel void @divergent_bitreverse_i32(i32 %val, ptr addrspace(1) %out) {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%divergent = add i32 %val, %tid
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%res = call i32 @llvm.bitreverse.i32(i32 %divergent)
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store i32 %res, ptr addrspace(1) %out
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ret void
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}
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; GCN-LABEL: name: uniform_bitreverse_i64
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; GCN: S_BREV_B64
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define amdgpu_kernel void @uniform_bitreverse_i64(i64 %val, ptr addrspace(1) %out) {
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%res = call i64 @llvm.bitreverse.i64(i64 %val)
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store i64 %res, ptr addrspace(1) %out
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ret void
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}
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; GCN-LABEL: name: divergent_bitreverse_i64
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; GCN: V_BFREV_B32
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; GCN: V_BFREV_B32
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define amdgpu_kernel void @divergent_bitreverse_i64(i64 %val, ptr addrspace(1) %out) {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%ext = zext i32 %tid to i64
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%divergent = add i64 %val, %ext
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%res = call i64 @llvm.bitreverse.i64(i64 %divergent)
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store i64 %res, ptr addrspace(1) %out
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x()
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declare i32 @llvm.bitreverse.i32(i32)
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declare i64 @llvm.bitreverse.i64(i64)
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