blob: d75b3afc7b72c37cf7129e83ee30e27ec1396758 [file] [log] [blame]
; RUN: llc -march=hexagon -enable-pipeliner -stats -o /dev/null < %s 2>&1 | FileCheck %s --check-prefix=STATS
; REQUIRES: asserts
; We're unable to pipeline a loop with a subreg as an operand of a Phi.
; STATS-NOT: 1 pipeliner - Number of loops software pipelined
; Function Attrs: nounwind readnone
define void @f0(i32 %a0) #0 {
b0:
%v0 = sext i32 %a0 to i64
br label %b1
b1: ; preds = %b1, %b0
%v1 = phi i32 [ 805306368, %b0 ], [ %v12, %b1 ]
%v2 = phi i32 [ 5, %b0 ], [ %v13, %b1 ]
%v3 = sext i32 %v1 to i64
%v4 = mul nsw i64 %v3, %v0
%v5 = lshr i64 %v4, 32
%v6 = trunc i64 %v5 to i32
%v7 = sub nsw i32 536870912, %v6
%v8 = sext i32 %v7 to i64
%v9 = mul nsw i64 %v8, %v3
%v10 = lshr i64 %v9, 32
%v11 = shl nuw nsw i64 %v10, 4
%v12 = trunc i64 %v11 to i32
%v13 = add nsw i32 %v2, -1
%v14 = icmp eq i32 %v13, 0
br i1 %v14, label %b2, label %b1
b2: ; preds = %b1
ret void
}
attributes #0 = { nounwind readnone "target-cpu"="hexagonv55" }