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f200766275
Summary: As discussed on llvm-dev[1]. This change adds the basic boilerplate code around having this intrinsic in LLVM: - Changes in Intrinsics.td, and the IR Verifier - A lowering pass to lower @llvm.experimental.guard to normal control flow - Inliner support [1]: http://lists.llvm.org/pipermail/llvm-dev/2016-February/095523.html Reviewers: reames, atrick, chandlerc, rnk, JosephTremoulet, echristo Subscribers: mcrosier, llvm-commits Differential Revision: http://reviews.llvm.org/D18527 llvm-svn: 264976
40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; RUN: opt -S -always-inline < %s | FileCheck %s
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declare void @llvm.experimental.guard(i1, ...)
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define i8 @callee(i1* %c_ptr) alwaysinline {
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%c = load volatile i1, i1* %c_ptr
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call void(i1, ...) @llvm.experimental.guard(i1 %c, i32 1) [ "deopt"(i32 1) ]
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ret i8 5
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}
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define void @caller_0(i1* %c, i8* %ptr) {
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; CHECK-LABEL: @caller_0(
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entry:
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; CHECK: [[COND:%[^ ]+]] = load volatile i1, i1* %c
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[COND]], i32 1) [ "deopt"(i32 2, i32 1) ]
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; CHECK-NEXT: store i8 5, i8* %ptr
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%v = call i8 @callee(i1* %c) [ "deopt"(i32 2) ]
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store i8 %v, i8* %ptr
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ret void
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}
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define i32 @caller_1(i1* %c, i8* %ptr) personality i8 3 {
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; CHECK-LABEL: @caller_1(
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; CHECK: [[COND:%[^ ]+]] = load volatile i1, i1* %c
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[COND]], i32 1) [ "deopt"(i32 3, i32 1) ]
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; CHECK-NEXT: br label %normal
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entry:
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%v = invoke i8 @callee(i1* %c) [ "deopt"(i32 3) ] to label %normal
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unwind label %unwind
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unwind:
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%lp = landingpad i32 cleanup
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ret i32 43
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normal:
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store i8 %v, i8* %ptr
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ret i32 42
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}
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