forked from OSchip/llvm-project
136 lines
6.3 KiB
LLVM
136 lines
6.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -make-guards-explicit < %s | FileCheck %s
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; RUN: opt -S -passes=make-guards-explicit < %s | FileCheck %s
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declare void @llvm.experimental.guard(i1,...)
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; Check that a sole guard can be turned into explicit guards form.
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define void @trivial_guard(i1 %cond) {
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; CHECK-LABEL: @trivial_guard(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND:%.*]], [[WIDENABLE_COND]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ]
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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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entry:
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call void(i1, ...) @llvm.experimental.guard(i1 %cond) [ "deopt"(i32 123, i64 456) ]
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ret void
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}
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; Check that a sequence of guards can be turned into explicit guards form.
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define void @trivial_guard_sequence(i1 %cond1, i1 %cond2, i1 %cond3) {
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; CHECK-LABEL: @trivial_guard_sequence(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND1:%.*]], [[WIDENABLE_COND]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded:
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; CHECK-NEXT: [[WIDENABLE_COND3:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND4:%.*]] = and i1 [[COND2:%.*]], [[WIDENABLE_COND3]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND4]], label [[GUARDED1:%.*]], label [[DEOPT2:%.*]], !prof !0
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; CHECK: deopt2:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 789, i64 123) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded1:
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; CHECK-NEXT: [[WIDENABLE_COND7:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND8:%.*]] = and i1 [[COND3:%.*]], [[WIDENABLE_COND7]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND8]], label [[GUARDED5:%.*]], label [[DEOPT6:%.*]], !prof !0
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; CHECK: deopt6:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 456, i64 789) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded5:
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; CHECK-NEXT: ret void
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;
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entry:
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call void(i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"(i32 123, i64 456) ]
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call void(i1, ...) @llvm.experimental.guard(i1 %cond2) [ "deopt"(i32 789, i64 123) ]
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call void(i1, ...) @llvm.experimental.guard(i1 %cond3) [ "deopt"(i32 456, i64 789) ]
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ret void
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}
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; Check that all instructions between the guards preserve.
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define void @split_block_contents(i1 %cond1, i1 %cond2, i1 %cond3, i32* %p) {
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; CHECK-LABEL: @split_block_contents(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
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; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND1:%.*]], [[WIDENABLE_COND]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded:
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; CHECK-NEXT: store i32 1, i32* [[P]]
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; CHECK-NEXT: [[WIDENABLE_COND3:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND4:%.*]] = and i1 [[COND2:%.*]], [[WIDENABLE_COND3]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND4]], label [[GUARDED1:%.*]], label [[DEOPT2:%.*]], !prof !0
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; CHECK: deopt2:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 789, i64 123) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded1:
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; CHECK-NEXT: store i32 2, i32* [[P]]
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; CHECK-NEXT: [[WIDENABLE_COND7:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND8:%.*]] = and i1 [[COND3:%.*]], [[WIDENABLE_COND7]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND8]], label [[GUARDED5:%.*]], label [[DEOPT6:%.*]], !prof !0
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; CHECK: deopt6:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 456, i64 789) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded5:
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; CHECK-NEXT: store i32 3, i32* [[P]]
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; CHECK-NEXT: ret void
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;
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entry:
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store i32 0, i32* %p
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call void(i1, ...) @llvm.experimental.guard(i1 %cond1) [ "deopt"(i32 123, i64 456) ]
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store i32 1, i32* %p
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call void(i1, ...) @llvm.experimental.guard(i1 %cond2) [ "deopt"(i32 789, i64 123) ]
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store i32 2, i32* %p
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call void(i1, ...) @llvm.experimental.guard(i1 %cond3) [ "deopt"(i32 456, i64 789) ]
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store i32 3, i32* %p
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ret void
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}
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; Check that the guard can split a loop properly.
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define void @split_loop(i1 %cond, i32 %N, i32 %M) {
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; CHECK-LABEL: @split_loop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
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; CHECK-NEXT: [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N:%.*]]
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; CHECK-NEXT: [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
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; CHECK-NEXT: br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"(i32 123, i64 456) ]
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; CHECK-NEXT: ret void
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; CHECK: guarded:
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; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp slt i32 [[IV]], [[M:%.*]]
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; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1
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; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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%guard_cond = icmp slt i32 %iv, %N
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call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"(i32 123, i64 456) ]
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%loop_cond = icmp slt i32 %iv, %M
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%iv.next = add i32 %iv, 1
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br i1 %loop_cond, label %loop, label %exit
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exit:
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ret void
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}
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