derek.holloway
7502bf64a4
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46 lines
1.5 KiB
LLVM
46 lines
1.5 KiB
LLVM
; RUN: opt -S -passes=instcombine %s -o - | FileCheck %s
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%Complex = type { double, double }
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; Check that instcombine preserves TBAA when narrowing loads
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define double @teststructextract(ptr %val) {
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; CHECK: load double, {{.*}}, !tbaa
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; CHECK-NOT: load %Complex
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%loaded = load %Complex, ptr %val, !tbaa !1
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%real = extractvalue %Complex %loaded, 0
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ret double %real
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}
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define double @testarrayextract(ptr %val) {
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; CHECK: load double, {{.*}}, !tbaa
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; CHECK-NOT: load [2 x double]
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%loaded = load [2 x double], ptr %val, !tbaa !1
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%real = extractvalue [2 x double] %loaded, 0
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ret double %real
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}
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; Check that inscombine preserves TBAA when breaking up stores
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define void @teststructinsert(ptr %loc, double %a, double %b) {
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; CHECK: store double %a, {{.*}}, !tbaa
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; CHECK: store double %b, {{.*}}, !tbaa
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; CHECK-NOT: store %Complex
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%inserted = insertvalue %Complex undef, double %a, 0
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%inserted2 = insertvalue %Complex %inserted, double %b, 1
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store %Complex %inserted2, ptr %loc, !tbaa !1
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ret void
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}
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define void @testarrayinsert(ptr %loc, double %a, double %b) {
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; CHECK: store double %a, {{.*}}, !tbaa
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; CHECK: store double %b, {{.*}}, !tbaa
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; CHECK-NOT: store [2 x double]
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%inserted = insertvalue [2 x double] undef, double %a, 0
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%inserted2 = insertvalue [2 x double] %inserted, double %b, 1
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store [2 x double] %inserted2, ptr %loc, !tbaa !1
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ret void
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}
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!0 = !{!"tbaa_root"}
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!1 = !{!2, !2, i64 0}
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!2 = !{!"Complex", !0, i64 0}
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