40e7fa632d
Instead of using the Os/Oz level during pass pipeline construction, query the optsize/minsize attribute on the function to determine whether specialization is allowed to take place. This ensures consistent behavior for per-function attributes. It's worth noting that FuncSpec *already* checks for minsize, but at the call-site level.
40 lines
738 B
LLVM
40 lines
738 B
LLVM
; RUN: opt -passes="ipsccp<func-spec>" -S < %s | FileCheck %s
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; CHECK-NOT: @compute.specialized.1
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; CHECK-NOT: @compute.specialized.2
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define i64 @main(i64 %x, i1 %flag) {
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entry:
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br i1 %flag, label %plus, label %minus
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plus:
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%tmp0 = call i64 @compute(i64 %x, ptr @plus)
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br label %merge
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minus:
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%tmp1 = call i64 @compute(i64 %x, ptr @minus)
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br label %merge
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merge:
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%tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
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ret i64 %tmp2
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}
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define internal i64 @compute(i64 %x, ptr %binop) optsize {
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entry:
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%tmp0 = call i64 %binop(i64 %x)
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ret i64 %tmp0
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}
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define internal i64 @plus(i64 %x) {
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entry:
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%tmp0 = add i64 %x, 1
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ret i64 %tmp0
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}
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define internal i64 @minus(i64 %x) {
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entry:
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%tmp0 = sub i64 %x, 1
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ret i64 %tmp0
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}
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