derek.holloway
7502bf64a4
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40 lines
1.5 KiB
LLVM
40 lines
1.5 KiB
LLVM
; This test verifies whether two identical functions, f1 and f2, can be merged
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; locally using the global merge function.
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; The functions, f1.Tgm and f2.Tgm, will be folded by the linker through
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; Identical Code Folding (ICF).
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; While identical functions can already be folded by the linker, creating this
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; canonical form can be beneficial in downstream passes. This merging process
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; can be controlled by the -global-merging-skip-no-params option.
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; RUN: llc -mtriple=arm64-apple-darwin -enable-global-merge-func=true -global-merging-skip-no-params=false < %s | FileCheck %s --check-prefix=MERGE
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; RUN: llc -mtriple=arm64-apple-darwin -enable-global-merge-func=true -global-merging-skip-no-params=true < %s | FileCheck %s --implicit-check-not=".Tgm"
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; MERGE: _f1.Tgm
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; MERGE: _f2.Tgm
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@g = external local_unnamed_addr global [0 x i32], align 4
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@g1 = external global i32, align 4
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@g2 = external global i32, align 4
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define i32 @f1(i32 %a) {
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entry:
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%idxprom = sext i32 %a to i64
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%arrayidx = getelementptr inbounds [0 x i32], ptr @g, i64 0, i64 %idxprom
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%0 = load i32, ptr %arrayidx, align 4
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%1 = load volatile i32, ptr @g1, align 4
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%mul = mul nsw i32 %1, %0
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%add = add nsw i32 %mul, 1
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ret i32 %add
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}
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define i32 @f2(i32 %a) {
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entry:
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%idxprom = sext i32 %a to i64
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%arrayidx = getelementptr inbounds [0 x i32], ptr @g, i64 0, i64 %idxprom
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%0 = load i32, ptr %arrayidx, align 4
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%1 = load volatile i32, ptr @g1, align 4
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%mul = mul nsw i32 %1, %0
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%add = add nsw i32 %mul, 1
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ret i32 %add
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}
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