File: SPV_KHR_bit_instructions.ll

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llvm-toolchain-20 1%3A20.1.6-1~exp1
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; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv32-unknown-unknown %s --spirv-ext=+SPV_KHR_bit_instructions -o - | FileCheck %s --check-prefix=CHECK-EXTENSION
; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-NO-EXTENSION

; CHECK-EXTENSION:      OpCapability BitInstructions
; CHECK-EXTENSION-NEXT: OpExtension "SPV_KHR_bit_instructions"
; CHECK-EXTENSION-NOT:  OpCabilitity Shader
; CHECK-NO-EXTENSION:     OpCapability Shader
; CHECK-NO-EXTENSION-NOT: OpCabilitity BitInstructions
; CHECK-NO-EXTENSION-NOT: OpExtension "SPV_KHR_bit_instructions"


; CHECK-EXTENSION: %[[#int:]] = OpTypeInt 32
; CHECK-EXTENSION: OpBitReverse %[[#int]]
; CHECK-NO-EXTENSION: %[[#int:]] = OpTypeInt 32
; CHECK-NO-EXTENSION: OpBitReverse %[[#int]]

define spir_kernel void @testBitRev(i32 %a, i32 %b, i32 %c, i32 addrspace(1)* nocapture %res) local_unnamed_addr {
entry:
  %call = tail call i32 @llvm.bitreverse.i32(i32 %b)
  store i32 %call, i32 addrspace(1)* %res, align 4
  ret void
}

declare i32 @llvm.bitreverse.i32(i32)