forked from OSchip/llvm-project
40 lines
1.2 KiB
LLVM
40 lines
1.2 KiB
LLVM
; RUN: opt %s -passes=inline -inline-threshold=20 -S | FileCheck %s
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declare i1 @llvm.is.constant.i64(i64)
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declare void @foo()
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define void @callee(i64 %val) {
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%cond = call i1 @llvm.is.constant.i64(i64 %val)
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br i1 %cond, label %cond.true, label %cond.false
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cond.true:
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; Rack up costs with a couple of function calls so that this function
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; gets inlined only when @llvm.is.constant.i64 is folded. In reality,
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; the "then" clause of __builtin_constant_p tends to have statements
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; that fold very well, so the cost of the "then" clause is not a huge
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; concern.
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call void @foo()
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call void @foo()
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ret void
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cond.false:
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ret void
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}
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define void @caller(i64 %val) {
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; CHECK-LABEL: @caller(
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; CHECK-NEXT: [[COND_I:%.*]] = call i1 @llvm.is.constant.i64(i64 [[VAL:%.*]])
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; CHECK-NEXT: br i1 [[COND_I]], label %[[COND_TRUE_I:.*]], label %[[COND_FALSE_I:.*]]
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; CHECK: [[COND_TRUE_I]]:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label %[[CALLEE_EXIT:.*]]
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; CHECK: [[COND_FALSE_I]]:
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; CHECK-NEXT: br label %[[CALLEE_EXIT]]
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; CHECK: [[CALLEE_EXIT]]:
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; CHECK-NEXT: ret void
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;
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call void @callee(i64 %val)
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ret void
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}
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