[PGO] Relax test cases in PGO instrumentation

[oota-llvm.git] / test / Transforms / LICM / hoisting.ll

diff --git a/test/Transforms/LICM/hoisting.ll b/test/Transforms/LICM/hoisting.ll
index e7d36afb91b15667785bfed609b1dbf23e6ed68a..8609407cc59948fc9651f491b33bb6129ee05cb4 100644 (file)
--- a/test/Transforms/LICM/hoisting.ll
+++ b/test/Transforms/LICM/hoisting.ll
@@ -7,8 +7,8 @@ declare void @foo()
 ; This testcase tests for a problem where LICM hoists 
 ; potentially trapping instructions when they are not guaranteed to execute.
 define i32 @test1(i1 %c) {
-; CHECK: @test1
-       %A = load i32* @X               ; <i32> [#uses=2]
+; CHECK-LABEL: @test1(
+       %A = load i32, i32* @X          ; <i32> [#uses=2]
        br label %Loop
 Loop:          ; preds = %LoopTail, %0
        call void @foo( )
@@ -29,15 +29,15 @@ Out:                ; preds = %LoopTail
 }
 
 
-declare void @foo2(i32)
+declare void @foo2(i32) nounwind
 
 
 ;; It is ok and desirable to hoist this potentially trapping instruction.
 define i32 @test2(i1 %c) {
-; CHECK: @test2
-; CHECK-NEXT: load i32* @X
+; CHECK-LABEL: @test2(
+; CHECK-NEXT: load i32, i32* @X
 ; CHECK-NEXT: %B = sdiv i32 4, %A
-       %A = load i32* @X               ; <i32> [#uses=2]
+       %A = load i32, i32* @X          ; <i32> [#uses=2]
        br label %Loop
 Loop:
         ;; Should have hoisted this div!
@@ -48,3 +48,71 @@ Out:         ; preds = %Loop
        %C = sub i32 %A, %B             ; <i32> [#uses=1]
        ret i32 %C
 }
+
+
+; This loop invariant instruction should be constant folded, not hoisted.
+define i32 @test3(i1 %c) {
+; CHECK-LABEL: define i32 @test3(
+; CHECK: call void @foo2(i32 6)
+       %A = load i32, i32* @X          ; <i32> [#uses=2]
+       br label %Loop
+Loop:
+       %B = add i32 4, 2               ; <i32> [#uses=2]
+       call void @foo2( i32 %B )
+       br i1 %c, label %Loop, label %Out
+Out:           ; preds = %Loop
+       %C = sub i32 %A, %B             ; <i32> [#uses=1]
+       ret i32 %C
+}
+
+; CHECK-LABEL: @test4(
+; CHECK: call
+; CHECK: sdiv
+; CHECK: ret
+define i32 @test4(i32 %x, i32 %y) nounwind uwtable ssp {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %entry, %for.body
+  %i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
+  %n.01 = phi i32 [ 0, %entry ], [ %add, %for.body ]
+  call void @foo_may_call_exit(i32 0)
+  %div = sdiv i32 %x, %y
+  %add = add nsw i32 %n.01, %div
+  %inc = add nsw i32 %i.02, 1
+  %cmp = icmp slt i32 %inc, 10000
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body
+  %n.0.lcssa = phi i32 [ %add, %for.body ]
+  ret i32 %n.0.lcssa
+}
+
+declare void @foo_may_call_exit(i32)
+
+; PR14854
+; CHECK-LABEL: @test5(
+; CHECK: extractvalue
+; CHECK: br label %tailrecurse
+; CHECK: tailrecurse:
+; CHECK: ifend:
+; CHECK: insertvalue
+define { i32*, i32 } @test5(i32 %i, { i32*, i32 } %e) {
+entry:
+  br label %tailrecurse
+
+tailrecurse:                                      ; preds = %then, %entry
+  %i.tr = phi i32 [ %i, %entry ], [ %cmp2, %then ]
+  %out = extractvalue { i32*, i32 } %e, 1
+  %d = insertvalue { i32*, i32 } %e, i32* null, 0
+  %cmp1 = icmp sgt i32 %out, %i.tr
+  br i1 %cmp1, label %then, label %ifend
+
+then:                                             ; preds = %tailrecurse
+  call void @foo()
+  %cmp2 = add i32 %i.tr, 1
+  br label %tailrecurse
+
+ifend:                                            ; preds = %tailrecurse
+  ret { i32*, i32 } %d
+}