4f9217c519
The MinSize attribute can be attached to both the callee and the caller in the callsite. Function specialisation was already skipped for function declarations (callees) with MinSize. This also skips specialisations for the callsite when it has MinSize set. Differential Revision: https://reviews.llvm.org/D109441
49 lines
1.1 KiB
LLVM
49 lines
1.1 KiB
LLVM
; RUN: opt -function-specialization -func-specialization-size-threshold=3 -S < %s | FileCheck %s
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; Checks for callsites that have been annotated with MinSize. We only expect
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; specialisation for the call that does not have the attribute:
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;
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; CHECK: plus:
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; CHECK: %tmp0 = call i64 @compute.1(i64 %x, i64 (i64)* @plus)
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; CHECK: br label %merge
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; CHECK: minus:
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; CHECK: %tmp1 = call i64 @compute(i64 %x, i64 (i64)* @minus) #0
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; CHECK: br label %merge
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;
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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, i64 (i64)* @plus)
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br label %merge
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minus:
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%tmp1 = call i64 @compute(i64 %x, i64 (i64)* @minus) #0
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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, i64 (i64)* %binop) {
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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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attributes #0 = { minsize optsize }
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