-; RUN: llvm-upgrade < %s | llvm-as | opt -sccp -adce -simplifycfg | llvm-dis | \
-; RUN: not grep br
+; RUN: opt < %s -sccp -loop-deletion -simplifycfg -S | not grep br
; No matter how hard you try, sqrt(1.0) is always 1.0. This allows the
; optimizer to delete this loop.
-declare double %sqrt(double)
+declare double @sqrt(double)
-double %test(uint %param) {
+define double @test(i32 %param) {
entry:
br label %Loop
-
-Loop:
- %I2 = phi uint [ 0, %entry ], [ %I3, %Loop ]
- %V = phi double [ 1.0, %entry], [ %V2, %Loop ]
-
- %V2 = call double %sqrt(double %V)
-
- %I3 = add uint %I2, 1
- %tmp.7 = setne uint %I3, %param
- br bool %tmp.7, label %Loop, label %Exit
-
-Exit:
+Loop: ; preds = %Loop, %entry
+ %I2 = phi i32 [ 0, %entry ], [ %I3, %Loop ] ; <i32> [#uses=1]
+ %V = phi double [ 1.000000e+00, %entry ], [ %V2, %Loop ] ; <double> [#uses=2]
+ %V2 = call double @sqrt( double %V ) ; <double> [#uses=1]
+ %I3 = add i32 %I2, 1 ; <i32> [#uses=2]
+ %tmp.7 = icmp ne i32 %I3, %param ; <i1> [#uses=1]
+ br i1 %tmp.7, label %Loop, label %Exit
+Exit: ; preds = %Loop
ret double %V
}
+