64 lines
1.4 KiB
LLVM
64 lines
1.4 KiB
LLVM
; RUN: llc < %s -march=amdgcn -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI --check-prefix=FUNC %s
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; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck --check-prefix=SI --check-prefix=FUNC %s
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; FUNC-LABEL: {{^}}break_inserted_outside_of_loop:
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; SI: [[LOOP_LABEL:[A-Z0-9]+]]:
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; Lowered break instructin:
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; SI: s_or_b64
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; Lowered Loop instruction:
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; SI: s_andn2_b64
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; s_cbranch_execnz [[LOOP_LABEL]]
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; SI: s_endpgm
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define void @break_inserted_outside_of_loop(i32 addrspace(1)* %out, i32 %a, i32 %b) {
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main_body:
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%0 = and i32 %a, %b
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%1 = trunc i32 %0 to i1
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br label %ENDIF
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ENDLOOP:
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store i32 0, i32 addrspace(1)* %out
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ret void
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ENDIF:
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br i1 %1, label %ENDLOOP, label %ENDIF
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}
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; FUNC-LABEL: {{^}}phi_cond_outside_loop:
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; FIXME: This could be folded into the s_or_b64 instruction
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; SI: s_mov_b64 [[ZERO:s\[[0-9]+:[0-9]+\]]], 0
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; SI: [[LOOP_LABEL:[A-Z0-9]+]]
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; SI: v_cmp_ne_i32_e32 vcc, 0, v{{[0-9]+}}
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; SI_IF_BREAK instruction:
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; SI: s_or_b64 [[BREAK:s\[[0-9]+:[0-9]+\]]], vcc, [[ZERO]]
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; SI_LOOP instruction:
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; SI: s_andn2_b64 exec, exec, [[BREAK]]
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; SI: s_cbranch_execnz [[LOOP_LABEL]]
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; SI: s_endpgm
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define void @phi_cond_outside_loop(i32 %a, i32 %b) {
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entry:
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%0 = icmp eq i32 %a , 0
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br i1 %0, label %if, label %else
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if:
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br label %endif
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else:
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%1 = icmp eq i32 %b, 0
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br label %endif
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endif:
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%2 = phi i1 [0, %if], [%1, %else]
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br label %loop
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loop:
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br i1 %2, label %exit, label %loop
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exit:
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ret void
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}
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