488 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			YAML
		
	
	
	
			
		
		
	
	
			488 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			YAML
		
	
	
	
# RUN: llc -march=amdgcn -verify-machineinstrs -run-pass=si-optimize-exec-masking-pre-ra -o - %s | FileCheck -check-prefix=GCN %s
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# GCN: name: negated_cond_vop2
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop2
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop2_redef_vcc1
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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# GCN-NEXT: $vcc_lo = COPY $sgpr0
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# GCN-NEXT: $vcc = S_AND_B64 $exec, $vcc, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop2_redef_vcc1
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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    $vcc_lo = COPY $sgpr0
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    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop2_redef_vcc2
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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# GCN-NEXT: $vcc_hi = COPY $sgpr0
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# GCN-NEXT: $vcc = S_AND_B64 $exec, $vcc, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop2_redef_vcc2
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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    $vcc_hi = COPY $sgpr0
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    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3_redef_cmp
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
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# GCN-NEXT: %2.sub1:sreg_64_xexec = COPY $sgpr0
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# GCN-NEXT: $vcc = S_AND_B64 %2, $exec, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3_redef_cmp
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
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    %2.sub1 = COPY $sgpr0
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_undef_vcc
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# GCN:      $vcc = S_AND_B64 $exec, undef $vcc, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_undef_vcc
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body:             |
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  bb.0:
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    $vcc = S_AND_B64 $exec, undef $vcc, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3_imp_vcc
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# GCN:      $vcc = IMPLICIT_DEF
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, $vcc, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3_imp_vcc
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body:             |
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  bb.0:
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    $vcc = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, $vcc, implicit $exec
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop2_imp_vcc
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# GCN:      $vcc = IMPLICIT_DEF
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, $vcc, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop2_imp_vcc
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body:             |
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  bb.0:
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    $vcc = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, $vcc, implicit $exec
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    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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    $vcc = S_AND_B64 killed $vcc, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3_redef_sel
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: %1:vgpr_32 = COPY $vgpr0
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# GCN-NEXT: %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
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# GCN-NEXT: $vcc = S_AND_B64 %2, $exec, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3_redef_sel
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    %1:vgpr_32 = COPY $vgpr0
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop2_used_sel
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop2_used_sel
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    $vgpr0 = COPY %1
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop2_used_vcc
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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# GCN-NEXT: $sgpr0_sgpr1 = COPY $vcc
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop2_used_vcc
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
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    $sgpr0_sgpr1 = COPY $vcc
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    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3_sel_wrong_subreg1
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1.sub1:vreg_64 = IMPLICIT_DEF
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# GCN-NEXT: %1.sub0:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub1, 1, implicit $exec
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# GCN-NEXT: $vcc = S_AND_B64 %2, $exec, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3_sel_wrong_subreg1
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1.sub1 = IMPLICIT_DEF
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    %1.sub0:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub1, 1, implicit $exec
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3_sel_wrong_subreg2
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1.sub0:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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# GCN-NEXT: %1.sub1:vreg_64 = IMPLICIT_DEF
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# GCN-NEXT: %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub1, 1, implicit $exec
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# GCN-NEXT: $vcc = S_AND_B64 %2, $exec, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3_sel_wrong_subreg2
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1.sub0:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    %1.sub1 = IMPLICIT_DEF
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub1, 1, implicit $exec
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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  bb.2:
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    S_ENDPGM 0  
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...
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# GCN: name: negated_cond_vop3_sel_right_subreg1
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# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
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# GCN-NEXT: %1.sub1:vreg_64 = IMPLICIT_DEF
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# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
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# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
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---
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name:            negated_cond_vop3_sel_right_subreg1
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body:             |
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  bb.0:
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    %0:sreg_64_xexec = IMPLICIT_DEF
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    %1.sub1 = IMPLICIT_DEF
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    %1.sub0:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
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    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub0, 1, implicit $exec
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    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
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    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
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    S_BRANCH %bb.1
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  bb.1:
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    S_BRANCH %bb.0
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 | 
						|
  bb.2:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 | 
						|
 | 
						|
# GCN: name: negated_cond_vop3_sel_right_subreg2
 | 
						|
# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
# GCN-NEXT: %1.sub1:vreg_64 = IMPLICIT_DEF
 | 
						|
# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
 | 
						|
# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
 | 
						|
---
 | 
						|
name:            negated_cond_vop3_sel_right_subreg2
 | 
						|
body:             |
 | 
						|
  bb.0:
 | 
						|
    %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
    %1.sub0:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
    %1.sub1 = IMPLICIT_DEF
 | 
						|
    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub0, 1, implicit $exec
 | 
						|
    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
 | 
						|
    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.1
 | 
						|
 | 
						|
  bb.1:
 | 
						|
    S_BRANCH %bb.0
 | 
						|
 | 
						|
  bb.2:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 | 
						|
 | 
						|
# GCN: name: negated_cond_vop3_sel_subreg_overlap
 | 
						|
# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
# GCN-NEXT: %1.sub2:vreg_128 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
# GCN-NEXT: %1.sub2_sub3:vreg_128 = IMPLICIT_DEF
 | 
						|
# GCN-NEXT: %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub2, 1, implicit $exec
 | 
						|
# GCN-NEXT: $vcc = S_AND_B64 %2, $exec, implicit-def dead $scc
 | 
						|
# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
 | 
						|
---
 | 
						|
name:            negated_cond_vop3_sel_subreg_overlap
 | 
						|
body:             |
 | 
						|
  bb.0:
 | 
						|
    %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
    %1.sub2:vreg_128 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
    %1.sub2_sub3 = IMPLICIT_DEF
 | 
						|
    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1.sub2, 1, implicit $exec
 | 
						|
    $vcc = S_AND_B64 killed %2, $exec, implicit-def dead $scc
 | 
						|
    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.1
 | 
						|
 | 
						|
  bb.1:
 | 
						|
    S_BRANCH %bb.0
 | 
						|
 | 
						|
  bb.2:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 | 
						|
 | 
						|
# GCN: name: negated_cond_vop2_dominated_blocks
 | 
						|
# GCN:      %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
# GCN:      $vcc = S_ANDN2_B64 $exec, %0, implicit-def dead $scc
 | 
						|
# GCN-NEXT: S_CBRANCH_VCCNZ %bb.3, implicit $vcc
 | 
						|
---
 | 
						|
name:            negated_cond_vop2_dominated_blocks
 | 
						|
body:             |
 | 
						|
  bb.0:
 | 
						|
    %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
 | 
						|
  bb.1:
 | 
						|
    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
 | 
						|
    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
 | 
						|
    S_CBRANCH_VCCNZ %bb.3, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.2
 | 
						|
 | 
						|
  bb.2:
 | 
						|
    S_BRANCH %bb.1
 | 
						|
 | 
						|
  bb.3:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 | 
						|
 | 
						|
# GCN: name: negated_cond_vop2_different_blocks_cmp_and
 | 
						|
# GCN:      %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
# GCN:      $vcc = S_AND_B64 $exec, %2, implicit-def dead $scc
 | 
						|
# GCN-NEXT: S_CBRANCH_VCCNZ %bb.3, implicit $vcc
 | 
						|
---
 | 
						|
name:            negated_cond_vop2_different_blocks_cmp_and
 | 
						|
body:             |
 | 
						|
  bb.0:
 | 
						|
    %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
    %2:sreg_64_xexec = V_CMP_NE_U32_e64 %1, 1, implicit $exec
 | 
						|
 | 
						|
  bb.1:
 | 
						|
    $vcc = S_AND_B64 $exec, killed %2, implicit-def dead $scc
 | 
						|
    S_CBRANCH_VCCNZ %bb.3, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.2
 | 
						|
 | 
						|
  bb.2:
 | 
						|
    S_BRANCH %bb.1
 | 
						|
 | 
						|
  bb.3:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 | 
						|
 | 
						|
# GCN: name: negated_cond_vop2_not_dominated_blocks
 | 
						|
# GCN:      V_CNDMASK_B32_e64 0, 0, 0, 1,
 | 
						|
# GCN:      $vcc = S_AND_B64 $exec, $vcc, implicit-def dead $scc
 | 
						|
# GCN-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
 | 
						|
---
 | 
						|
name:            negated_cond_vop2_not_dominated_blocks
 | 
						|
body:             |
 | 
						|
  bb.0:
 | 
						|
    $vcc = IMPLICIT_DEF
 | 
						|
    %1 = IMPLICIT_DEF
 | 
						|
    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.1
 | 
						|
 | 
						|
  bb.1:
 | 
						|
    %0:sreg_64_xexec = IMPLICIT_DEF
 | 
						|
    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
 | 
						|
 | 
						|
  bb.2:
 | 
						|
    V_CMP_NE_U32_e32 1, %1, implicit-def $vcc, implicit $exec
 | 
						|
    $vcc = S_AND_B64 $exec, killed $vcc, implicit-def dead $scc
 | 
						|
    S_CBRANCH_VCCNZ %bb.4, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.3
 | 
						|
 | 
						|
  bb.3:
 | 
						|
    S_BRANCH %bb.2
 | 
						|
 | 
						|
  bb.4:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 | 
						|
 | 
						|
# GCN: name: negated_cond_subreg
 | 
						|
# GCN:      %0.sub0_sub1:sgpr_128 = IMPLICIT_DEF
 | 
						|
# GCN-NEXT: $vcc = S_ANDN2_B64 $exec, %0.sub0_sub1, implicit-def dead $scc
 | 
						|
# GCN-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
 | 
						|
---
 | 
						|
name:            negated_cond_subreg
 | 
						|
body:             |
 | 
						|
  bb.0:
 | 
						|
    %0.sub0_sub1:sgpr_128 = IMPLICIT_DEF
 | 
						|
    %1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0.sub0_sub1, implicit $exec
 | 
						|
    %2.sub0_sub1:sgpr_128 = V_CMP_NE_U32_e64 %1, 1, implicit $exec
 | 
						|
    $vcc = S_AND_B64 $exec, killed %2.sub0_sub1:sgpr_128, implicit-def dead $scc
 | 
						|
    S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
 | 
						|
    S_BRANCH %bb.1
 | 
						|
 | 
						|
  bb.1:
 | 
						|
    S_BRANCH %bb.0
 | 
						|
 | 
						|
  bb.2:
 | 
						|
    S_ENDPGM 0  
 | 
						|
...
 |