; 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
+; CHECK-LABEL: @test1(
%A = load i32* @X ; <i32> [#uses=2]
br label %Loop
Loop: ; preds = %LoopTail, %0
;; It is ok and desirable to hoist this potentially trapping instruction.
define i32 @test2(i1 %c) {
-; CHECK: @test2
+; CHECK-LABEL: @test2(
; CHECK-NEXT: load i32* @X
; CHECK-NEXT: %B = sdiv i32 4, %A
%A = load i32* @X ; <i32> [#uses=2]
; This loop invariant instruction should be constant folded, not hoisted.
define i32 @test3(i1 %c) {
-; CHECK: define i32 @test3
+; CHECK-LABEL: define i32 @test3(
; CHECK: call void @foo2(i32 6)
%A = load i32* @X ; <i32> [#uses=2]
br label %Loop
ret i32 %C
}
-; CHECK: @test4
+; CHECK-LABEL: @test4(
; CHECK: call
; CHECK: sdiv
; CHECK: ret
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
+}