47cf2affbd
If a guard call being lowered by LowerGuardIntrinsics has the `!make.implicit` metadata attached, then reattach the metadata to the branch in the resulting expanded form of the intrinsic. This allows us to implement null checks as guards and still get the benefit of implicit null checks. llvm-svn: 268148
75 lines
2.3 KiB
LLVM
75 lines
2.3 KiB
LLVM
; RUN: opt -S -lower-guard-intrinsic < %s | FileCheck %s
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declare void @llvm.experimental.guard(i1, ...)
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define i8 @f_basic(i1* %c_ptr) {
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; CHECK-LABEL: @f_basic(
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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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; CHECK: br i1 %c, label %guarded, label %deopt
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; CHECK: deopt:
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; CHECK-NEXT: %deoptcall = call i8 (...) @llvm.experimental.deoptimize.i8(i32 1) [ "deopt"(i32 1) ]
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; CHECK-NEXT: ret i8 %deoptcall
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; CHECK: guarded:
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; CHECK-NEXT: ret i8 5
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}
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define void @f_void_return_ty(i1* %c_ptr) {
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; CHECK-LABEL: @f_void_return_ty(
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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"() ]
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ret void
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; CHECK: br i1 %c, label %guarded, label %deopt
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid(i32 1) [ "deopt"() ]
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; CHECK-NEXT: ret void
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; CHECK: guarded:
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; CHECK-NEXT: ret void
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}
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define void @f_multiple_args(i1* %c_ptr) {
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; CHECK-LABEL: @f_multiple_args(
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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, i32 2, double 500.0) [ "deopt"(i32 2, i32 3) ]
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ret void
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; CHECK: br i1 %c, label %guarded, label %deopt
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid(i32 1, i32 2, double 5.000000e+02) [ "deopt"(i32 2, i32 3) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded:
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; CHECK-NEXT: ret void
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}
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define i32 @f_zero_args(i1* %c_ptr) {
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; CHECK-LABEL: @f_zero_args(
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%c = load volatile i1, i1* %c_ptr
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call void(i1, ...) @llvm.experimental.guard(i1 %c) [ "deopt"(i32 2, i32 3) ]
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ret i32 500
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; CHECK: br i1 %c, label %guarded, label %deopt
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; CHECK: deopt:
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; CHECK-NEXT: %deoptcall = call i32 (...) @llvm.experimental.deoptimize.i32() [ "deopt"(i32 2, i32 3) ]
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; CHECK-NEXT: ret i32 %deoptcall
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; CHECK: guarded:
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; CHECK-NEXT: ret i32 500
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}
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define i8 @f_with_make_implicit_md(i32* %ptr) {
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; CHECK-LABEL: @f_with_make_implicit_md(
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; CHECK: br i1 %notNull, label %guarded, label %deopt, !make.implicit !0
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; CHECK: deopt:
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; CHECK-NEXT: %deoptcall = call i8 (...) @llvm.experimental.deoptimize.i8(i32 1) [ "deopt"(i32 1) ]
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; CHECK-NEXT: ret i8 %deoptcall
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%notNull = icmp ne i32* %ptr, null
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call void(i1, ...) @llvm.experimental.guard(i1 %notNull, i32 1) [ "deopt"(i32 1) ], !make.implicit !{}
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ret i8 5
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}
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