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68ff4e0dd2
Reviewers: arsenm, nhaehnle Subscribers: kzhuravl, wdng, yaxunl, dstuttard, tpr, t-tye Differential Revision: https://reviews.llvm.org/D38543 llvm-svn: 316426
53 lines
1.5 KiB
LLVM
53 lines
1.5 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=CHECK %s
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;CHECK-LABEL: {{^}}ret:
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;CHECK: v_cmp_eq_u32_e32 [[CMP:[^,]+]], v0, v1
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;CHECK: s_wqm_b64 [[WQM:[^,]+]], [[CMP]]
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;CHECK: v_cndmask_b32_e64 v0, 0, 1.0, [[WQM]]
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define amdgpu_ps float @ret(i32 %v0, i32 %v1) #1 {
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main_body:
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%c = icmp eq i32 %v0, %v1
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%w = call i1 @llvm.amdgcn.wqm.vote(i1 %c)
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%r = select i1 %w, float 1.0, float 0.0
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ret float %r
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}
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;CHECK-LABEL: {{^}}true:
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;CHECK: s_wqm_b64
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define amdgpu_ps float @true() #1 {
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main_body:
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%w = call i1 @llvm.amdgcn.wqm.vote(i1 true)
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%r = select i1 %w, float 1.0, float 0.0
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ret float %r
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}
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;CHECK-LABEL: {{^}}false:
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;CHECK: s_wqm_b64
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define amdgpu_ps float @false() #1 {
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main_body:
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%w = call i1 @llvm.amdgcn.wqm.vote(i1 false)
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%r = select i1 %w, float 1.0, float 0.0
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ret float %r
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}
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;CHECK-LABEL: {{^}}kill:
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;CHECK: v_cmp_eq_u32_e32 [[CMP:[^,]+]], v0, v1
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;CHECK: s_wqm_b64 [[WQM:[^,]+]], [[CMP]]
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;FIXME: This could just be: s_and_b64 exec, exec, [[WQM]]
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;CHECK: v_cndmask_b32_e64 [[KILL:[^,]+]], -1.0, 1.0, [[WQM]]
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;CHECK: v_cmpx_le_f32_e32 {{[^,]+}}, 0, [[KILL]]
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;CHECK: s_endpgm
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define amdgpu_ps void @kill(i32 %v0, i32 %v1) #1 {
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main_body:
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%c = icmp eq i32 %v0, %v1
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%w = call i1 @llvm.amdgcn.wqm.vote(i1 %c)
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%r = select i1 %w, float 1.0, float -1.0
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call void @llvm.AMDGPU.kill(float %r)
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ret void
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}
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declare void @llvm.AMDGPU.kill(float) #1
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declare i1 @llvm.amdgcn.wqm.vote(i1)
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attributes #1 = { nounwind }
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