48 lines
1.1 KiB
LLVM
48 lines
1.1 KiB
LLVM
; RUN: opt -S -mergefunc < %s | FileCheck %s
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define weak i32 @sum(i32 %x, i32 %y) {
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%sum = add i32 %x, %y
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%sum2 = add i32 %sum, %y
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%sum3 = add i32 %sum2, %y
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ret i32 %sum3
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}
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define weak i32 @add(i32 %x, i32 %y) {
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%sum = add i32 %x, %y
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%sum2 = add i32 %sum, %y
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%sum3 = add i32 %sum2, %y
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ret i32 %sum3
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}
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; Don't replace a weak function use by another equivalent function. We don't
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; know whether the symbol that will ulitmately be linked is equivalent - we
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; don't know that the weak definition is the definitive definition or whether it
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; will be overriden by a stronger definition).
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; CHECK-LABEL: define private i32 @0
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; CHECK: add i32
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; CHECK: add i32
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; CHECK: add i32
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; CHECK: ret
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; CHECK-LABEL: define i32 @use_weak
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; CHECK: call i32 @add
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; CHECK: call i32 @sum
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; CHECK: ret
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; CHECK-LABEL: define weak i32 @sum
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; CHECK: tail call i32 @0
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; CHECK: ret
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; CHECK-LABEL: define weak i32 @add
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; CHECK: tail call i32 @0
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; CHECK: ret
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define i32 @use_weak(i32 %a, i32 %b) {
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%res = call i32 @add(i32 %a, i32 %b)
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%res2 = call i32 @sum(i32 %a, i32 %b)
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%res3 = add i32 %res, %res2
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ret i32 %res3
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}
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