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dd292a30dc
Detailed description:
After https://reviews.llvm.org/D59990 submit several issues were discovered.
Changes in common code were preserved but AMDGPU specific part was reverted to keep the backend working correctly.
Discovered issues were addressed in the following commits:
https://reviews.llvm.org/D67662
https://reviews.llvm.org/D67101
https://reviews.llvm.org/D63953
https://reviews.llvm.org/D63731
This change brings back AMDGPU specific changes.
Reviewed by: rampitec, arsenm
Differential Revision: https://reviews.llvm.org/D68635
llvm-svn: 374767
38 lines
962 B
LLVM
38 lines
962 B
LLVM
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; GCN-LABEL: {{^}}test_dont_clobber_scc:
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; GCN: ; %entry
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; GCN: s_cmp_eq_u32 s0, 0
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; GCN: s_cbranch_scc1 [[PREEXIT:BB[0-9_]+]]
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; GCN: ; %blocka
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; GCN: s_cmp_eq_u32 s1, 0
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; GCN: s_cbranch_scc1 [[EXIT:BB[0-9_]+]]
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; GCN: [[PREEXIT]]:
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; GCN: [[EXIT]]:
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define amdgpu_vs float @test_dont_clobber_scc(i32 inreg %uni, i32 inreg %uni2) #0 {
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entry:
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%cc.uni = icmp eq i32 %uni, 0
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br i1 %cc.uni, label %exit, label %blocka
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blocka:
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call void asm sideeffect "; dummy a", ""()
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%cc.uni2 = icmp eq i32 %uni2, 0
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br i1 %cc.uni2, label %exit, label %blockb
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blockb:
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call void asm sideeffect "; dummy b", ""()
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br label %exit
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exit:
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%cc.phi = phi i1 [ true, %entry ], [ false, %blocka ], [ false, %blockb ]
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call void asm sideeffect "; dummy exit", ""()
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%r = select i1 %cc.phi, float 1.0, float 2.0
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ret float %r
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}
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attributes #0 = { nounwind }
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