derek.holloway
7502bf64a4
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44 lines
1.9 KiB
LLVM
44 lines
1.9 KiB
LLVM
; RUN: opt -passes='loop-mssa(licm<allowspeculation>)' -S %s | FileCheck --check-prefixes=COMMON,SPEC_ON %s
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; RUN: opt -passes='loop-mssa(licm<no-allowspeculation>)' -S %s | FileCheck --check-prefixes=COMMON,SPEC_OFF %s
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; RUN: opt -passes='licm<no-allowspeculation>' -S %s | FileCheck --check-prefixes=COMMON,SPEC_OFF %s
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; RUN: opt -passes='loop-mssa(lnicm<allowspeculation>)' -S %s | FileCheck --check-prefixes=COMMON,SPEC_ON %s
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; RUN: opt -passes='loop-mssa(lnicm<no-allowspeculation>)' -S %s | FileCheck --check-prefixes=COMMON,SPEC_OFF %s
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; RUN: opt -passes='lnicm<no-allowspeculation>' -S %s | FileCheck --check-prefixes=COMMON,SPEC_OFF %s
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define void @test(ptr %ptr, i32 %N) {
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; COMMON-LABEL: @test(
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; COMMON-NEXT: entry:
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; SPEC_ON-NEXT: [[GEP:%.*]] = getelementptr [10 x i32], ptr [[PTR:%.*]], i32 0, i32 1
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; COMMON-NEXT: br label [[LOOP_HEADER:%.*]]
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; COMMON: loop.header:
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; COMMON-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; COMMON-NEXT: [[CMP:%.*]] = icmp ult i32 [[IV]], [[N:%.*]]
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; COMMON-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT:%.*]]
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; COMMON: loop.latch:
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; SPEC_OFF-NEXT: [[GEP:%.*]] = getelementptr [10 x i32], ptr [[PTR:%.*]], i32 0, i32 1
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; COMMON-NEXT: [[GEP_IV:%.*]] = getelementptr i32, ptr [[GEP]], i32 [[IV]]
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; COMMON-NEXT: store i32 9999, ptr [[GEP_IV]], align 4
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; COMMON-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1
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; COMMON-NEXT: br label [[LOOP_HEADER]]
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; COMMON: exit:
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; COMMON-NEXT: ret void
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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%cmp = icmp ult i32 %iv, %N
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br i1 %cmp, label %loop.latch, label %exit
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loop.latch:
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%gep = getelementptr [10 x i32], ptr %ptr, i32 0, i32 1
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%gep.iv = getelementptr i32, ptr %gep, i32 %iv
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store i32 9999, ptr %gep.iv
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%iv.next = add i32 %iv, 1
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br label %loop.header
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exit:
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ret void
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}
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