derek.holloway
7502bf64a4
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53 lines
2.7 KiB
LLVM
53 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=gvn -gvn-add-phi-translation=true -S < %s | FileCheck %s --check-prefix=ADD-TRANS-ON --check-prefixes=CHECK,PT-ON-MDEP
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; RUN: opt -passes='gvn<memoryssa>' -gvn-add-phi-translation=true -S < %s | FileCheck %s --check-prefix=ADD-TRANS-ON --check-prefixes=CHECK,PT-ON-MSSA
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; RUN: opt -passes=gvn -gvn-add-phi-translation=false -S < %s | FileCheck %s --check-prefix=ADD-TRANS-OFF --check-prefixes=CHECK,PT-OFF-MDEP
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; RUN: opt -passes='gvn<memoryssa>' -gvn-add-phi-translation=false -S < %s | FileCheck %s --check-prefix=ADD-TRANS-OFF --check-prefixes=CHECK,PT-OFF-MSSA
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; Test that phi translation is able to hoist a load whose address
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; depends on an add also being hoisted.
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define double @phi_translation_hoists_add(ptr %a, i64 %idx) {
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; ADD-TRANS-ON-LABEL: @phi_translation_hoists_add(
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; ADD-TRANS-ON-NEXT: entry:
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; ADD-TRANS-ON-NEXT: [[ADD_PHI_TRANS_INSERT:%.*]] = add nuw nsw i64 [[IDX:%.*]], 1
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; ADD-TRANS-ON-NEXT: [[GEP_PHI_TRANS_INSERT:%.*]] = getelementptr inbounds double, ptr [[A:%.*]], i64 [[ADD_PHI_TRANS_INSERT]]
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; ADD-TRANS-ON-NEXT: [[LOAD_PRE:%.*]] = load double, ptr [[GEP_PHI_TRANS_INSERT]], align 8
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; ADD-TRANS-ON-NEXT: br label [[FOR_BODY:%.*]]
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; ADD-TRANS-ON: for.body:
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; ADD-TRANS-ON-NEXT: [[CMP:%.*]] = fcmp ole double [[LOAD_PRE]], 1.000000e+00
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; ADD-TRANS-ON-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[FOR_BODY]]
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; ADD-TRANS-ON: exit:
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; ADD-TRANS-ON-NEXT: ret double [[LOAD_PRE]]
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;
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; ADD-TRANS-OFF-LABEL: @phi_translation_hoists_add(
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; ADD-TRANS-OFF-NEXT: entry:
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; ADD-TRANS-OFF-NEXT: br label [[FOR_BODY:%.*]]
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; ADD-TRANS-OFF: for.body:
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; ADD-TRANS-OFF-NEXT: [[ADD:%.*]] = add nuw nsw i64 [[IDX:%.*]], 1
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; ADD-TRANS-OFF-NEXT: [[GEP:%.*]] = getelementptr inbounds double, ptr [[A:%.*]], i64 [[ADD]]
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; ADD-TRANS-OFF-NEXT: [[LOAD:%.*]] = load double, ptr [[GEP]], align 8
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; ADD-TRANS-OFF-NEXT: [[CMP:%.*]] = fcmp ole double [[LOAD]], 1.000000e+00
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; ADD-TRANS-OFF-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[FOR_BODY]]
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; ADD-TRANS-OFF: exit:
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; ADD-TRANS-OFF-NEXT: ret double [[LOAD]]
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;
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%add = add nuw nsw i64 %idx, 1
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%gep = getelementptr inbounds double, ptr %a, i64 %add
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%load = load double, ptr %gep
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%cmp = fcmp ole double %load, 1.000000e+00
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br i1 %cmp, label %exit, label %for.body
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exit:
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ret double %load
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}
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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; CHECK: {{.*}}
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; PT-OFF-MDEP: {{.*}}
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; PT-OFF-MSSA: {{.*}}
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; PT-ON-MDEP: {{.*}}
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; PT-ON-MSSA: {{.*}}
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