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llvm-mirror/test/Transforms/MakeGuardsExplicit/basic.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

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