37 lines
1.4 KiB
LLVM
37 lines
1.4 KiB
LLVM
; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=fiji -verify-machineinstrs < %s | FileCheck %s
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declare i32 @llvm.amdgcn.readfirstlane(i32) #0
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; CHECK-LABEL: {{^}}test_readfirstlane:
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; CHECK: v_readfirstlane_b32 s{{[0-9]+}}, v{{[0-9]+}}
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define amdgpu_kernel void @test_readfirstlane(i32 addrspace(1)* %out, i32 %src) #1 {
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%readfirstlane = call i32 @llvm.amdgcn.readfirstlane(i32 %src)
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store i32 %readfirstlane, i32 addrspace(1)* %out, align 4
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ret void
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}
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; CHECK-LABEL: {{^}}test_readfirstlane_imm:
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; CHECK: v_mov_b32_e32 [[VVAL:v[0-9]]], 32
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; CHECK: v_readfirstlane_b32 s{{[0-9]+}}, [[VVAL]]
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define amdgpu_kernel void @test_readfirstlane_imm(i32 addrspace(1)* %out) #1 {
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%readfirstlane = call i32 @llvm.amdgcn.readfirstlane(i32 32)
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store i32 %readfirstlane, i32 addrspace(1)* %out, align 4
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ret void
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}
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; TODO: m0 should be folded.
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; CHECK-LABEL: {{^}}test_readfirstlane_m0:
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; CHECK: s_mov_b32 m0, -1
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; CHECK: s_mov_b32 [[COPY_M0:s[0-9]+]], m0
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; CHECK: v_mov_b32_e32 [[VVAL:v[0-9]]], [[COPY_M0]]
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; CHECK: v_readfirstlane_b32 s{{[0-9]+}}, [[VVAL]]
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define amdgpu_kernel void @test_readfirstlane_m0(i32 addrspace(1)* %out) #1 {
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%m0 = call i32 asm "s_mov_b32 m0, -1", "={M0}"()
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%readfirstlane = call i32 @llvm.amdgcn.readfirstlane(i32 %m0)
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store i32 %readfirstlane, i32 addrspace(1)* %out, align 4
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ret void
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}
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attributes #0 = { nounwind readnone convergent }
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attributes #1 = { nounwind }
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