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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=gvn -gvn-add-phi-translation=true -S < %s | FileCheck %s --check-prefix=ADD-TRANS-ON
; RUN: opt -passes=gvn -gvn-add-phi-translation=false -S < %s | FileCheck %s --check-prefix=ADD-TRANS-OFF
; Test that phi translation is able to hoist a load whose address
; depends on an add also being hoisted.
define double @phi_translation_hoists_add(ptr %a, i64 %idx) {
; ADD-TRANS-ON-LABEL: @phi_translation_hoists_add(
; ADD-TRANS-ON-NEXT: entry:
; ADD-TRANS-ON-NEXT: [[ADD_PHI_TRANS_INSERT:%.*]] = add nuw nsw i64 [[IDX:%.*]], 1
; ADD-TRANS-ON-NEXT: [[GEP_PHI_TRANS_INSERT:%.*]] = getelementptr inbounds double, ptr [[A:%.*]], i64 [[ADD_PHI_TRANS_INSERT]]
; ADD-TRANS-ON-NEXT: [[LOAD_PRE:%.*]] = load double, ptr [[GEP_PHI_TRANS_INSERT]], align 8
; ADD-TRANS-ON-NEXT: br label [[FOR_BODY:%.*]]
; ADD-TRANS-ON: for.body:
; ADD-TRANS-ON-NEXT: [[CMP:%.*]] = fcmp ole double [[LOAD_PRE]], 1.000000e+00
; ADD-TRANS-ON-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[FOR_BODY]]
; ADD-TRANS-ON: exit:
; ADD-TRANS-ON-NEXT: ret double [[LOAD_PRE]]
;
; ADD-TRANS-OFF-LABEL: @phi_translation_hoists_add(
; ADD-TRANS-OFF-NEXT: entry:
; ADD-TRANS-OFF-NEXT: br label [[FOR_BODY:%.*]]
; ADD-TRANS-OFF: for.body:
; ADD-TRANS-OFF-NEXT: [[ADD:%.*]] = add nuw nsw i64 [[IDX:%.*]], 1
; ADD-TRANS-OFF-NEXT: [[GEP:%.*]] = getelementptr inbounds double, ptr [[A:%.*]], i64 [[ADD]]
; ADD-TRANS-OFF-NEXT: [[LOAD:%.*]] = load double, ptr [[GEP]], align 8
; ADD-TRANS-OFF-NEXT: [[CMP:%.*]] = fcmp ole double [[LOAD]], 1.000000e+00
; ADD-TRANS-OFF-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[FOR_BODY]]
; ADD-TRANS-OFF: exit:
; ADD-TRANS-OFF-NEXT: ret double [[LOAD]]
;
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%add = add nuw nsw i64 %idx, 1
%gep = getelementptr inbounds double, ptr %a, i64 %add
%load = load double, ptr %gep
%cmp = fcmp ole double %load, 1.000000e+00
br i1 %cmp, label %exit, label %for.body
exit:
ret double %load
}
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