61 lines
2.6 KiB
LLVM
61 lines
2.6 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -gvn -S %s | FileCheck %s
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; Make sure GVN correctly sets the modified status when doing PRE.
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define i32 @test(i64 %v, i32* %ptr.1, i32** %ptr.2, i1 %c) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[L_0:%.*]] = load i32, i32* [[PTR_1:%.*]], align 4
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; CHECK-NEXT: br i1 [[C:%.*]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: ret i32 10
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; CHECK: if.end:
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; CHECK-NEXT: [[L_0_EXT:%.*]] = zext i32 [[L_0]] to i64
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; CHECK-NEXT: [[C_2:%.*]] = icmp eq i64 [[L_0_EXT]], 10
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; CHECK-NEXT: br i1 [[C_2]], label [[IF_2_END:%.*]], label [[IF_2_THEN:%.*]]
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; CHECK: if.2.then:
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; CHECK-NEXT: [[GEP_1:%.*]] = getelementptr inbounds i32, i32* [[PTR_1]], i64 [[V:%.*]]
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; CHECK-NEXT: [[L_2:%.*]] = load i32, i32* [[GEP_1]], align 4
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; CHECK-NEXT: [[DOTPRE:%.*]] = zext i32 [[L_2]] to i64
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; CHECK-NEXT: br label [[IF_2_END]]
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; CHECK: if.2.end:
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; CHECK-NEXT: [[REP_0_EXT_PRE_PHI:%.*]] = phi i64 [ [[DOTPRE]], [[IF_2_THEN]] ], [ 10, [[IF_END]] ]
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; CHECK-NEXT: [[REP_0:%.*]] = phi i32 [ [[L_2]], [[IF_2_THEN]] ], [ [[L_0]], [[IF_END]] ]
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; CHECK-NEXT: [[L_3:%.*]] = load i32*, i32** [[PTR_2:%.*]], align 8
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; CHECK-NEXT: [[GEP_2:%.*]] = getelementptr inbounds i32, i32* [[PTR_1]], i64 [[REP_0_EXT_PRE_PHI]]
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; CHECK-NEXT: [[L_4:%.*]] = load i32, i32* [[GEP_2]], align 4
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; CHECK-NEXT: [[GEP_3:%.*]] = getelementptr inbounds i32, i32* [[L_3]], i64 10
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; CHECK-NEXT: [[L_5:%.*]] = load i32, i32* [[GEP_3]], align 4
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; CHECK-NEXT: [[R:%.*]] = add i32 [[L_4]], [[L_5]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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entry:
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%l.0 = load i32, i32* %ptr.1, align 4
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br i1 %c, label %if.then, label %if.end
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if.then: ; preds = %entry
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ret i32 10
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if.end: ; preds = %entry
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%l.0.ext = zext i32 %l.0 to i64
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%c.2 = icmp eq i64 %l.0.ext, 10
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br i1 %c.2, label %if.2.end, label %if.2.then
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if.2.then: ; preds = %if.end
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%gep.1 = getelementptr inbounds i32, i32* %ptr.1, i64 %v
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%l.2 = load i32, i32* %gep.1, align 4
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br label %if.2.end
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if.2.end: ; preds = %if.then7, %if.end
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%rep.0 = phi i32 [ %l.2, %if.2.then ], [ %l.0, %if.end ]
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%l.3 = load i32*, i32** %ptr.2, align 8
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%rep.0.ext = zext i32 %rep.0 to i64
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%gep.2 = getelementptr inbounds i32, i32* %ptr.1, i64 %rep.0.ext
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%l.4 = load i32, i32* %gep.2, align 4
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%gep.3 = getelementptr inbounds i32, i32* %l.3, i64 10
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%l.5 = load i32, i32* %gep.3, align 4
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%r = add i32 %l.4, %l.5
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ret i32 %r
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}
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