f952bc05fd
Required for D140210 in order to disable FuncSpec at {Os, Oz}
optimization levels.
Differential Revision: https://reviews.llvm.org/D140564
83 lines
2.3 KiB
LLVM
83 lines
2.3 KiB
LLVM
; RUN: opt -S --passes="ipsccp<func-spec>" < %s | FileCheck %s
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define dso_local i32 @p0(i32 noundef %x) {
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entry:
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%add = add nsw i32 %x, 1
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ret i32 %add
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}
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define dso_local i32 @p1(i32 noundef %x) {
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entry:
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%sub = add nsw i32 %x, -1
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ret i32 %sub
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}
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; CHECK-LABEL: define dso_local i32 @f0
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; CHECK: tail call fastcc i32 @g.[[#A:]]({{.*}}@p0)
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;
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define dso_local i32 @f0(i32 noundef %x) {
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entry:
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%call = tail call fastcc i32 @g(i32 noundef %x, ptr noundef nonnull @p0)
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ret i32 %call
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}
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; CHECK-LABEL: define dso_local i32 @f1
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; CHECK: tail call fastcc i32 @g.[[#B:]]({{.*}}@p1)
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;
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define dso_local i32 @f1(i32 noundef %x) {
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entry:
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%call = tail call fastcc i32 @g(i32 noundef %x, ptr noundef nonnull @p1)
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ret i32 %call
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}
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; @g gets fully specialized
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; CHECK-NOT: define internal fastcc i32 @g(
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define internal fastcc i32 @g(i32 noundef %x, ptr nocapture noundef readonly %p) noinline {
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entry:
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%pcall = tail call i32 %p(i32 noundef %x)
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%fcall = tail call fastcc i32 @f(i32 noundef %pcall, ptr noundef nonnull %p)
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ret i32 %fcall
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}
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; CHECK-LABEL: define dso_local i32 @g0
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; CHECK: tail call fastcc i32 @f.[[#C:]]({{.*}}@p0)
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;
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define dso_local i32 @g0(i32 noundef %x) {
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entry:
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%call = tail call fastcc i32 @f(i32 noundef %x, ptr noundef nonnull @p0)
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ret i32 %call
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}
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define internal fastcc i32 @f(i32 noundef %x, ptr nocapture noundef readonly %p) noinline {
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entry:
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%call = tail call i32 %p(i32 noundef %x)
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%add = add nsw i32 %call, %x
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ret i32 %add
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}
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; CHECK-LABEL: define dso_local i32 @g1
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; CHECK: tail call fastcc i32 @f.[[#D:]]({{.*}}@p1)
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;
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define dso_local i32 @g1(i32 noundef %x) {
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entry:
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%call = tail call fastcc i32 @f(i32 noundef %x, ptr noundef nonnull @p1)
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ret i32 %call
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}
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define dso_local i32 @g2(i32 noundef %x) {
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entry:
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%call = tail call fastcc i32 @f(i32 noundef %x, ptr poison)
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ret i32 %call
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}
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; Check that a single argument, that cannot be used for specialisation, does not
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; prevent specialisation based on other arguments.
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;
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; Also check that for callsites which reside in the body of newly created
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; (specialized) functions, the lattice value of the arguments is known.
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;
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; CHECK-DAG: define internal fastcc i32 @g.[[#A]]
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; CHECK-DAG: define internal fastcc i32 @g.[[#B]]
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; CHECK-DAG: define internal fastcc i32 @f.[[#C]]
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; CHECK-DAG: define internal fastcc i32 @f.[[#D]]
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