entryBB-isLoopHdr.ll
1.15 KB
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; RUN: llc -march=hexagon -hexagon-hwloop-preheader < %s | FileCheck %s
; check for lack of assertion failures.
; CHECK: %bb.0
; Function Attrs: nounwind readnone
declare i32 @llvm.hexagon.A2.sath(i32) #0
; Function Attrs: nounwind readnone
declare i32 @llvm.hexagon.A2.neg(i32) #0
define void @f0(i16 signext %a0) {
b0:
%v0 = icmp slt i16 %a0, 1
br i1 %v0, label %b1, label %b3
b1: ; preds = %b2, %b0
%v1 = phi i16 [ %v11, %b2 ], [ %a0, %b0 ]
%v2 = sext i16 %v1 to i32
%v3 = tail call i32 @llvm.hexagon.A2.neg(i32 %v2)
%v4 = tail call i32 @llvm.hexagon.A2.sath(i32 %v3)
%v5 = trunc i32 %v4 to i16
%v6 = shl i32 %v4, 16
%v7 = ashr exact i32 %v6, 16
%v8 = icmp slt i16 %v5, 0
br i1 %v8, label %b2, label %b3
b2: ; preds = %b1
%v9 = tail call i32 @llvm.hexagon.A2.neg(i32 %v7)
%v10 = tail call i32 @llvm.hexagon.A2.sath(i32 %v9)
%v11 = trunc i32 %v10 to i16
%v12 = icmp slt i16 %v11, 1
br i1 %v12, label %b1, label %b3
b3: ; preds = %b2, %b1, %b0
ret void
}
attributes #0 = { nounwind readnone }