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The Swift and LLVM function mergers were disabled when Swift VFE or WME are enabled because the function merger did not respect metadata on calls to `llvm.type.checked.load`. This is no longer the case, so we can turn these passes back on.
44 lines
1.5 KiB
LLVM
44 lines
1.5 KiB
LLVM
; RUN: %swift-llvm-opt -passes='swift-merge-functions' -swiftmergefunc-threshold=2 %s | %FileCheck %s
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@g1 = external global i1
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@g2 = external global i1
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@g3 = external global i1
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declare { ptr, i1 } @llvm.type.checked.load(ptr, i32, metadata)
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define i1 @merge_candidate_a(ptr %ptr, i32 %offset) {
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%1 = call { ptr, i1 } @llvm.type.checked.load(ptr %ptr, i32 %offset, metadata !"common_metadata")
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%2 = extractvalue { ptr, i1 } %1, 1
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%3 = load i1, i1* @g1
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%4 = and i1 %2, %3
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ret i1 %4
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}
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; The function using common metadata should call into the merged function
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define i1 @merge_candidate_b(ptr %ptr, i32 %offset) {
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%1 = call { ptr, i1 } @llvm.type.checked.load(ptr %ptr, i32 %offset, metadata !"common_metadata")
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%2 = extractvalue { ptr, i1 } %1, 1
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%3 = load i1, i1* @g2
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%4 = and i1 %2, %3
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ret i1 %4
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}
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; CHECK-LABEL: @merge_candidate_b
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; CHECK: call i1 @merge_candidate_aTm
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; CHECK: ret
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; The function using different metadata should not
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define i1 @merge_candidate_c(ptr %ptr, i32 %offset) {
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%1 = call { ptr, i1 } @llvm.type.checked.load(ptr %ptr, i32 %offset, metadata !"different_metadata")
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%2 = extractvalue { ptr, i1 } %1, 1
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%3 = load i1, i1* @g3
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%4 = and i1 %2, %3
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ret i1 %4
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}
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; CHECK-LABEL: @merge_candidate_c
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; CHECK-NOT: call i1 @merge_candidate_aTm
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; CHECK: @llvm.type.checked.load(ptr %ptr, i32 %offset, metadata !"different_metadata")
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; CHECK-NOT: call i1 @merge_candidate_aTm
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; CHECK: ret
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