llvm-6502/test/Transforms/LICM/sink_trapping_inst.ll

19 lines
574 B
LLVM
Raw Normal View History

; Potentially trapping instructions may be sunk as long as they are guaranteed
; to be executed.
;
; RUN: llvm-as < %s | opt -licm | llvm-dis | %prcontext div 1 | grep Out:
define i32 @test(i32 %N) {
Entry:
br label %Loop
Loop: ; preds = %Loop, %Entry
%N_addr.0.pn = phi i32 [ %dec, %Loop ], [ %N, %Entry ] ; <i32> [#uses=3]
%tmp.6 = sdiv i32 %N, %N_addr.0.pn ; <i32> [#uses=1]
%dec = add i32 %N_addr.0.pn, -1 ; <i32> [#uses=1]
%tmp.1 = icmp ne i32 %N_addr.0.pn, 0 ; <i1> [#uses=1]
br i1 %tmp.1, label %Loop, label %Out
Out: ; preds = %Loop
ret i32 %tmp.6
}