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c00e9e688a
Currently SI_IF results in a s_and_saveexec_b64 followed by s_xor_b64. The xor is used to extract only the changed bits. In case of a simple if region where the only use of that value is in the SI_END_CF to restore the old exec mask, we can omit the xor and perform an or of the exec mask with the original exec value saved by the s_and_saveexec_b64. Differential Revision: https://reviews.llvm.org/D35861 llvm-svn: 309185
178 lines
8.3 KiB
LLVM
178 lines
8.3 KiB
LLVM
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -verify-machineinstrs < %s | FileCheck -strict-whitespace -check-prefix=GCN -check-prefix=SI %s
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; XUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -strict-whitespace -check-prefix=GCN -check-prefix=VI %s
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; FIXME: Enable for VI.
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declare i32 @llvm.amdgcn.workitem.id.x() nounwind readnone
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declare float @llvm.amdgcn.div.fmas.f32(float, float, float, i1) nounwind readnone
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declare double @llvm.amdgcn.div.fmas.f64(double, double, double, i1) nounwind readnone
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; GCN-LABEL: {{^}}test_div_fmas_f32:
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; SI-DAG: s_load_dword [[SA:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xb
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; SI-DAG: s_load_dword [[SC:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
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; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xc
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; VI-DAG: s_load_dword [[SA:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0x2c
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; VI-DAG: s_load_dword [[SC:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0x34
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; VI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0x30
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; GCN-DAG: v_mov_b32_e32 [[VC:v[0-9]+]], [[SC]]
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; GCN-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
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; GCN-DAG: v_mov_b32_e32 [[VA:v[0-9]+]], [[SA]]
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; GCN: v_div_fmas_f32 [[RESULT:v[0-9]+]], [[VA]], [[VB]], [[VC]]
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; GCN: buffer_store_dword [[RESULT]],
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; GCN: s_endpgm
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define amdgpu_kernel void @test_div_fmas_f32(float addrspace(1)* %out, float %a, float %b, float %c, i1 %d) nounwind {
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float %c, i1 %d) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_inline_imm_0:
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; SI-DAG: s_load_dword [[SC:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
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; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xc
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; SI-DAG: v_mov_b32_e32 [[VC:v[0-9]+]], [[SC]]
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; SI-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
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; SI: v_div_fmas_f32 [[RESULT:v[0-9]+]], 1.0, [[VB]], [[VC]]
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; SI: buffer_store_dword [[RESULT]],
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; SI: s_endpgm
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define amdgpu_kernel void @test_div_fmas_f32_inline_imm_0(float addrspace(1)* %out, float %a, float %b, float %c, i1 %d) nounwind {
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%result = call float @llvm.amdgcn.div.fmas.f32(float 1.0, float %b, float %c, i1 %d) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_inline_imm_1:
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; SI-DAG: s_load_dword [[SA:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xb
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; SI-DAG: s_load_dword [[SC:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
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; SI-DAG: v_mov_b32_e32 [[VC:v[0-9]+]], [[SC]]
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; SI-DAG: v_mov_b32_e32 [[VA:v[0-9]+]], [[SA]]
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; SI: v_div_fmas_f32 [[RESULT:v[0-9]+]], [[VA]], 1.0, [[VC]]
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; SI: buffer_store_dword [[RESULT]],
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; SI: s_endpgm
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define amdgpu_kernel void @test_div_fmas_f32_inline_imm_1(float addrspace(1)* %out, float %a, float %b, float %c, i1 %d) nounwind {
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float 1.0, float %c, i1 %d) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_inline_imm_2:
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; SI-DAG: s_load_dword [[SA:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xb
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; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xc
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; SI-DAG: v_mov_b32_e32 [[VA:v[0-9]+]], [[SA]]
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; SI-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
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; SI: v_div_fmas_f32 [[RESULT:v[0-9]+]], [[VA]], [[VB]], 1.0
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; SI: buffer_store_dword [[RESULT]],
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; SI: s_endpgm
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define amdgpu_kernel void @test_div_fmas_f32_inline_imm_2(float addrspace(1)* %out, float %a, float %b, float %c, i1 %d) nounwind {
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float 1.0, i1 %d) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f64:
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; GCN: v_div_fmas_f64
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define amdgpu_kernel void @test_div_fmas_f64(double addrspace(1)* %out, double %a, double %b, double %c, i1 %d) nounwind {
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%result = call double @llvm.amdgcn.div.fmas.f64(double %a, double %b, double %c, i1 %d) nounwind readnone
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store double %result, double addrspace(1)* %out, align 8
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_cond_to_vcc:
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; SI: v_cmp_eq_u32_e64 vcc, s{{[0-9]+}}, 0{{$}}
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; SI: v_div_fmas_f32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
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define amdgpu_kernel void @test_div_fmas_f32_cond_to_vcc(float addrspace(1)* %out, float %a, float %b, float %c, i32 %i) nounwind {
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%cmp = icmp eq i32 %i, 0
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float %c, i1 %cmp) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_imm_false_cond_to_vcc:
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; SI: s_mov_b64 vcc, 0
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; SI: v_div_fmas_f32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
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define amdgpu_kernel void @test_div_fmas_f32_imm_false_cond_to_vcc(float addrspace(1)* %out, float %a, float %b, float %c) nounwind {
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float %c, i1 false) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_imm_true_cond_to_vcc:
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; SI: s_mov_b64 vcc, -1
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; SI: v_div_fmas_f32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
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define amdgpu_kernel void @test_div_fmas_f32_imm_true_cond_to_vcc(float addrspace(1)* %out, float %a, float %b, float %c) nounwind {
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float %c, i1 true) nounwind readnone
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store float %result, float addrspace(1)* %out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_logical_cond_to_vcc:
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; SI-DAG: buffer_load_dword [[A:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
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; SI-DAG: buffer_load_dword [[B:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
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; SI-DAG: buffer_load_dword [[C:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
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; SI-DAG: v_cmp_eq_u32_e32 [[CMP0:vcc]], 0, v{{[0-9]+}}
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; SI-DAG: v_cmp_ne_u32_e64 [[CMP1:s\[[0-9]+:[0-9]+\]]], s{{[0-9]+}}, 0{{$}}
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; SI: s_and_b64 vcc, [[CMP0]], [[CMP1]]
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; SI: v_div_fmas_f32 {{v[0-9]+}}, [[A]], [[B]], [[C]]
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; SI: s_endpgm
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define amdgpu_kernel void @test_div_fmas_f32_logical_cond_to_vcc(float addrspace(1)* %out, float addrspace(1)* %in, i32 %d) nounwind {
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%tid = call i32 @llvm.amdgcn.workitem.id.x() nounwind readnone
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%gep.a = getelementptr float, float addrspace(1)* %in, i32 %tid
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%gep.b = getelementptr float, float addrspace(1)* %gep.a, i32 1
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%gep.c = getelementptr float, float addrspace(1)* %gep.a, i32 2
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%gep.out = getelementptr float, float addrspace(1)* %out, i32 2
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%a = load volatile float, float addrspace(1)* %gep.a
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%b = load volatile float, float addrspace(1)* %gep.b
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%c = load volatile float, float addrspace(1)* %gep.c
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%cmp0 = icmp eq i32 %tid, 0
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%cmp1 = icmp ne i32 %d, 0
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%and = and i1 %cmp0, %cmp1
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float %c, i1 %and) nounwind readnone
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store float %result, float addrspace(1)* %gep.out, align 4
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ret void
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}
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; GCN-LABEL: {{^}}test_div_fmas_f32_i1_phi_vcc:
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; SI: v_cmp_eq_u32_e32 vcc, 0, v{{[0-9]+}}
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; SI: s_and_saveexec_b64 [[SAVE:s\[[0-9]+:[0-9]+\]]], vcc
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; SI: buffer_load_dword [[LOAD:v[0-9]+]]
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; SI: v_cmp_ne_u32_e32 vcc, 0, [[LOAD]]
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; SI: v_cndmask_b32_e64 {{v[0-9]+}}, 0, -1, vcc
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; SI: BB9_2:
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; SI: s_or_b64 exec, exec, [[SAVE]]
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; SI: v_cmp_ne_u32_e32 vcc, 0, v{{[0-9]+}}
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; SI: v_div_fmas_f32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
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; SI: buffer_store_dword
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; SI: s_endpgm
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define amdgpu_kernel void @test_div_fmas_f32_i1_phi_vcc(float addrspace(1)* %out, float addrspace(1)* %in, i32 addrspace(1)* %dummy) nounwind {
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entry:
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%tid = call i32 @llvm.amdgcn.workitem.id.x() nounwind readnone
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%gep.out = getelementptr float, float addrspace(1)* %out, i32 2
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%gep.a = getelementptr float, float addrspace(1)* %in, i32 %tid
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%gep.b = getelementptr float, float addrspace(1)* %gep.a, i32 1
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%gep.c = getelementptr float, float addrspace(1)* %gep.a, i32 2
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%a = load float, float addrspace(1)* %gep.a
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%b = load float, float addrspace(1)* %gep.b
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%c = load float, float addrspace(1)* %gep.c
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%cmp0 = icmp eq i32 %tid, 0
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br i1 %cmp0, label %bb, label %exit
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bb:
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%val = load i32, i32 addrspace(1)* %dummy
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%cmp1 = icmp ne i32 %val, 0
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br label %exit
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exit:
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%cond = phi i1 [false, %entry], [%cmp1, %bb]
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%result = call float @llvm.amdgcn.div.fmas.f32(float %a, float %b, float %c, i1 %cond) nounwind readnone
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store float %result, float addrspace(1)* %gep.out, align 4
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ret void
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}
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